4-(Acetylamino)-5-chloro-2-methoxy-N-(1-(phenylmethyl)-4-piperidinyl)benzamide fumarate 63639-56-5 Benzamide, 4-(acetylamino)-5-chloro-2-methoxy-N-(1-(phenylmethyl)-4-piperidinyl)-, (E)-2-butenedioate