As mentioned in
your other thread, this unit just isn't going to work in your situation.
Yes, they do make step-up transformers that can convert the voltage -- I see units on Amazon that can do up to 5000 watts -- but that's not going to solve your problem.
The wiring to a 110V outlet is likely rated for 15 amps, which is 1650 watts. The A/C plus the converter will almost certainly exceed the circuit's capacity. If you're lucky, you'll just blow a breaker. If you're unlucky, you'll start a fire.
Don't do this. The air conditioner is built for 220V because it needs more power than a standard 110V outlet can provide. No amount of conversion can change that fact.
A 5000-watt converter is $115 on Amazon. Home Depot has several window air conditioners for $119, and which won't set your building on fire.