英文名称
2-[(3S,7S,8aS)-8a-ethyl-7-(9H-fluoren-9-ylmethoxycarbonylamino)-1,4-dioxo-3,6,7,8-tetrahydro-2H-pyrrolo[1,2-a]pyrazin-3-yl]acetic acid;2-[5-[(9H-fluoren-9-ylmethoxycarbonylamino)methyl]-3,6-dimethoxy-9,9-dimethylxanthen-4-yl]acetic acid;(2S)-1-[1-(9H-fluoren-9-ylmethoxycarbonyl)pyrrolidine-2-carbonyl]pyrrolidine-2-carboxylic acid