Pow csc csc sec x0 x0 
Mul Pow csc csc sec x0 Add x0 -1 Add Mul x0 Mul Mul Mul -1 cot csc sec x0 csc csc sec x0 Mul Mul Mul -1 cot sec x0 csc sec x0 Mul tan x0 sec x0 Mul csc csc sec x0 log csc csc sec x0 