英文别名LCZ696-9; LCZ696(valsartan + sacubitril) impurity 9; ethyl(2R,4S)-5-([1,1'-biphenyl]-4-yl)-4-(2,5-dioxopyrrolidin-1-yl)-2-methylpentanoate; LCZ700; (2R,4S)-ethyl 5-([1,1'-biphenyl]-4-yl)-4-(2,5-dioxopyrrolidin-1-yl)-2-methylpentanoate; LCZ-696 Impurity 4; LCZ-696-006-RS