Pow exp atan Pow Pow 0.648054273663885 atan sech x0 2 2 
Mul exp atan Pow Pow 0.648054273663885 atan sech x0 2 Mul 2 Mul exp atan Pow Pow 0.648054273663885 atan sech x0 2 Mul Mul Pow 0.648054273663885 atan sech x0 Mul 2 Mul Pow 0.648054273663885 Add atan sech x0 -1 Mul 0.214273443180858 Mul Mul tanh x0 Mul -1 sech x0 Pow Add 1 Mul sech x0 sech x0 -1 Pow Add 1 Mul Pow Pow 0.648054273663885 atan sech x0 2 Pow Pow 0.648054273663885 atan sech x0 2 -1 