Pow x0 Add -0.463647609000806 Mul -1 Add asech x4 log x0 
Mul Pow x0 Add Add -0.463647609000806 Mul -1 Add asech x4 log x0 -1 Add Add -0.463647609000806 Mul -1 Add asech x4 log x0 Mul Mul x0 log x0 Mul -1 Pow x0 -1 