(3S,7S,7aR)-5-<(2R)-2-(3,4-dihydroxyphenyl)-2-<4-ethyl-2,3-dioxopiperazin-1-yl)carbonylamino>acetamido>-7-formamido-2,2-dimethyl-2,3,7,7a-tetrahydroimidazo<5,1-b>thiazole-3,7-dicarboxylic acid 在
水 作用下,
生成 (2R,4S)-2-[(R)-carboxy-[[(2R)-2-(3,4-dihydroxyphenyl)-2-[(4-ethyl-2,3-dioxopiperazine-1-carbonyl)amino]acetyl]amino]-formamidomethyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid