Pow exp asec sec exp atan x0 x4 
Mul Pow exp asec sec exp atan x0 Add x4 -1 Mul x4 Mul exp asec sec exp atan x0 Mul Mul Mul tan exp atan x0 sec exp atan x0 Mul exp atan x0 Pow Add 1 Mul x0 x0 -1 Pow Mul Mul sqrt Add 1 Mul -1 Pow Mul sec exp atan x0 sec exp atan x0 -1 sec exp atan x0 sec exp atan x0 -1 