Swap Token1 for Token2, Given Token2 Qty check how much Token1 you would need (Use Token1 -> ETH -> Token2 Route)
check_tok1.to.tok2_tok2.fix(t1_a, t1_d, t2_a, t2_d, t2_q, u_w)Numeric vector representing the Token 1 Amount Needed
Token 1 Address
Token 1 Decimals
Token 2 Address
Token 2 Decimals
Token 2 Qty.
Uniswap Session