Mul Mul sec sec x0 x4 Pow atan x0 -0.457657554360286 
Add Mul Pow atan x0 -0.457657554360286 Mul x4 Mul Mul tan sec x0 sec sec x0 Mul tan x0 sec x0 Mul Mul sec sec x0 x4 Mul Pow atan x0 -1.45765755436029 Mul -0.457657554360286 Pow Add 1 Mul x0 x0 -1 