1,4-DIMETHOXYOCTAHYDROQUINOXALINE-2,3-DIONE
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1,4-DIMETHOXYOCTAHYDROQUINOXALINE-2,3-DIONE;1,4-DIMETHOXYPERHYDROQUINOXALIN-2,3-DIONE
2-[(3,4,5-三甲氧苯基)羰基氨基]乙酸
3-(4-甲氧羰苯基)丙酸甲酯