Pow Mul pi atan Add 0.648054273663885 sech pi Mul x6 x0 
Mul Pow Mul pi atan Add 0.648054273663885 sech pi Add Mul x6 x0 -1 Mul Mul Mul pi atan Add 0.648054273663885 sech pi log Mul pi atan Add 0.648054273663885 sech pi x6 