Assuming you are looking for the capabilities of Antonov’s heavy-lifting legacy (most likely the An-124 or An-225 , which represent the peak of their engineering), here is a report on the Antonov Heavy-Lift Capability .
The is not a real aircraft; it is a fictional "ultra-heavy" plane created as a community-made mod for flight simulation games like X-Plane 11 and 12 . Overview of the Fictional An-990
If the model doesn't exist, the post should correct that and maybe suggest similar models. Alternatively, if there's a new one, but I don't have info on that. I should proceed by noting that the An-990 isn't real and provide info on prominent Antonov aircraft, perhaps the An-225 as the largest. Also, mention the An-124, An-148, etc., and explain their features. That way, the post stays accurate even if the original premise is incorrect.
Carries 600,000 gallons of fire retardant to combat catastrophic wildfires.
: It could carry up to 250 tons of cargo, designed originally to transport the Soviet Buran space shuttle.