Mul atan Add x0 tanh Add sec x0 x6 log x0 
Add Mul log x0 Mul Add 1 Mul Pow sech Add sec x0 x6 2 Mul tan x0 sec x0 Pow Add 1 Mul Add x0 tanh Add sec x0 x6 Add x0 tanh Add sec x0 x6 -1 Mul atan Add x0 tanh Add sec x0 x6 Pow x0 -1 