acetophenetidin
See acetophenetidin in American Heritage Dictionary 4
(ăsˌĭ-tō-fə-nĕtˈĭ-dĭn, ə-sēˌtō-)
noun A white powder or crystalline solid, CH3CONHC6H4OC2H5, derived from coal tar and used in medicine to reduce fever and relieve pain. Also called phenacetin.