The indefinite integral of Xe ^ X / (1 + e ^ x) ^ 2 can't be solved

Part points:
=-亅 XD1 / (1 + e ^ x)
=-X / (1 + e ^ x) + 亅dx / (1 + e ^ x)
=-x/(1+e^x)+
亅 e ^ (- x) DX / (1 + e ^ (- x))
=-x/(1+e^x)-ln(1+e^(-x))+C