Mul atan x0 Mul Pow sech x6 Add x0 x2 x0 
Add Mul Mul Pow sech x6 Add x0 x2 x0 Pow Add 1 Mul x0 x0 -1 Mul atan x0 Add Mul x0 Mul Pow sech x6 Add Add x0 x2 -1 Mul sech x6 log sech x6 Pow sech x6 Add x0 x2 