What bus should I take from Fangzhuang to Financial Street Investment Plaza?

Take bus No.723 (Mazhuqiao-Qianmen) and get on at Fangzhuang Bridge West and get off at Taiji Field West. Transfer to Bus No.44 (Beiguanting-Beiguanting), get on the bus at Taiji Factory Road West and get off at Beijing Children's Hospital. The whole journey is about12.5km. ..