对哌嗪二酮;D-(-)-2-[(4-乙基-2,3-二氧代-1-哌嗪基)酰氨基]-2-(4-羟基苯基)乙酸;羟基-EPCP;(R)-(-)-2-(4-乙基-2,3-二氧哌啶-1-甲酰氨基)-2-(4-羟基苯基)羧酸;(R)-(-)-Alpha-[[(4-乙基-2,3-二氧-1-哌嗪基)羰基]氨基]-4-羟基苯乙酸;
(2R)-2-[(4-Ethyl-2,3-dioxopiperazinyl)carbonylamino]-2-(4-hydroxyphenyl)acetic acid;
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