Technically the replacement you found would not be a suitable replacement.
The larger capacitor is rated at 2.85uF with a tolerance of 5% plus or minus. That means it's allowed to range between 2.71 and 2.99 uF and still be usable. A 5% tolerance rating is pretty tight, as many circuits work fine with 20% tolerances, so you have to assume that the value needs to be fairly close to the specified value of 2.85 to work correctly.
Unfortunately, with that in mind the 2.5uF capacitor isn't close enough. Even if its value is at the top of the 5% tolerance range, that still only gets it up to 2.625uF, which doesn't get into the range of the original spec.
The smaller cap is closer, but still iffy; a 1.4uF 5% tolerance goes from 1.33 to 1.47. So at its nominal value of 1.5, that cap doesn't meet specifications, but at the bottom of the range at 1.425uF it could work.
In summary, according to the strict electrical specifications, the cap you found would not be a good choice for a replacement, but then again it's not too far off. If it was me I would probably keep looking, but in the end if you can't find anything closer I would give that one a try; worst case is it doesn't work and you're out a few bucks.
If I get a chance later today I'll see if I can poke around some component sites online and see if I can find something closer for you. It might help if you can post a picture of your original cap to help us find something that matches.
Just as a followup here, I'm not having much more luck than you so far in finding the exact replacement you're looking for, but be aware that you don't have to find one that has both values in the same package. The caps are packaged that way for convenience, but in practice there's no reason you can't use two separate capacitors instead.
As an example, here's a listing for a vendor on AliExpress selling a capacitor that has the 1.4uF value you're looking for.
1PCS CBB61 fan ceiling fan with light 0.6 0.8 3 0.4+1.2UF 0.8UF+1.4UF 450V 3 wire speed regulating motor starting capacitor - AliExpress 502
In this case you'd ignore the 0.8 capacitor and just wire up the 1.4 to your fan along with a separate 2.85 cap, assuming we can find one, which is proving to be a challenge. That one is rated at 450V, so it will work fine in a circuit that's rated for only 250V (you can always go up in voltage, but never down).
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Best guess is that it would be worth a try. Hard to say how long it might take to find an exact replacement, and that one has a fairly good chance of working, at least "good enough" for a ceiling fan.
por Jerry Wheeler