4-Oxazolidinecarboxylic acid, 3-[(2S)-5-[[[[(2,3-dihydro-2,2,4,6,7-pentamethyl-5-benzofuranyl)sulfonyl]amino]iminomethyl]amino]-2-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-1-oxopentyl]-2,2-dimethyl-, (4S)-
4-Oxazolidinecarboxylic acid, 3-[(2S)-5-[[[[(2,3-dihydro-2,2,4,6,7-pentamethyl-5-benzofuranyl)sulfonyl]amino]iminomethyl]amino]-2-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-1-oxopentyl]-2,2-dimethyl-, (4S)-