英文别名N-[2-(1-Hydroxycyclohexyl)-2-(4-Methoxyphenyl)ethyl]formamide; Formamide, N-[2-(1-hydroxycyclohexyl)-2-(4-methoxyphenyl)ethyl]-; Venlafaxine Impurity 21; Venlaflaxine Hydrochloride Impurity N-[2-(1-Hydroxycyclohexyl)-2-(4-methoxyphenyl)ethyl]-Formamide