(5S,9S,11S,12R)-11-((S)-sec-butyl)-1-(9H-fluoren-9-yl)-5,9-diisopropyl-12-methoxy-4,10-dimethyl-3,6,8-trioxo-2-oxa-4,7,10-triazatetradecan-14-oic acid

(5S,9S,11S,12R)-11-((S)-sec-butyl)-1-(9H-fluoren-9-yl)-5,9-diisopropyl-12-methoxy-4,10-dimethyl-3,6,8-trioxo-2-oxa-4,7,10-triazatetradecan-14-oic acid