methyl (6S,9R,12S,13S)-9-((1H-indol-3-yl)methyl)-13-methoxy-2,2,6,8-tetramethyl-12-(4-nitrophenyl)-4,7,10-trioxo-3-oxa-5,8,11-triazatetradecan-14-oate

(6S,9R,12S,13S)-9-((1H-indol-3-yl)methyl)-13-methoxy-2,2,6,8-tetramethyl-12-(4-nitrophenyl)-4,7,10-trioxo-3-oxa-5,8,11-triazatetradecan-14-oic acid

(2R,3R,7S,E)-8-(tert-butoxy)-3,5,7-trimethyl-8-oxooct-4-en-2-yl (6S,9R,12S,13S)-9-((1H-indol-3-yl)methyl)-13-methoxy-2,2,6,8-tetramethyl-12-(4-nitrophenyl)-4,7,10-trioxo-3-oxa-5,8,11-triazatetradecan-14-oate

(2S,3S)-methyl 3-azido-2-hydroxy-3-(4-nitrophenyl)propanoate

(2S,3S)-methyl 3-azido-2-methoxy-3-(4-nitrophenyl)propanoate