Mul Pow Pow x3 sech x0 -1.56912313203214 x0 
Add Mul x0 Mul Pow Pow x3 sech x0 -2.56912313203214 Mul -1.56912313203214 Mul Pow x3 Add sech x0 -1 Mul Mul x3 log x3 Mul tanh x0 Mul -1 sech x0 Pow Pow x3 sech x0 -1.56912313203214 