Add Pow sech x0 Pow x6 Pow x6 x1 Add csc exp coth x0 pi 
Add Mul Pow sech x0 Add Pow x6 Pow x6 x1 -1 Mul Pow x6 Pow x6 x1 Mul tanh x0 Mul -1 sech x0 Mul Mul Mul -1 cot exp coth x0 csc exp coth x0 Mul exp coth x0 Mul -1 Pow csch x0 2 