Synonyms: Propanedioicacid, [4-[(2S)-2-carboxy-2-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]ethyl]phenoxy]-,1,3-bis(1,1-dimethylethyl) ester (9CI); Propanedioic acid,[4-[2-carboxy-2-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]ethyl]phenoxy]-,1,3-bis(1,1-dimethylethyl) ester, (S)-