(2R,4R)-1-tert-butyl 2-(2-(9-((2S,5S)-1-((S)-2-(methoxycarbonylamino)-3-methylbutanoyl)-5-methylpyrrolidine-2-carbonyloxy)-8-oxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromen-3-yl)-2-oxoethyl) 4-(methoxymethyl)pyrrolidine-1,2-dicarboxylate

(2R,4R)-1-tert-butyl2-(2-(9-((2S,5S)-1-((S)-2-(methoxycarbonylamino)-3-methylbutanoyl)-5-methylpyrrolidine-2-carbonyloxy)-8-oxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromen-3-yl)-2-oxoethyl)4-(methoxymethyl)pyrrolidine-1,2-dicarboxylate

L-Proline,N-(methoxycarbony1)-L-valyl-5-methyl-,3-[2-[[[(2S,4S)-1-(1,1-dimethylethoxy)carbony]-4-(methoxymethyl)-2-pyrrolidinyl]carbonyl]oxy]acetyl]-8,9,10,11-tetrahydro-8-oxo-5H-benzo[d]naphtto[2,3-b] pyran-9-yl ester,(5S)-