(7R,11R,14R,17S,20S,E)-20-[(R)-1-(tert-butyldimethylsiloxy)ethyl]-7-hydroxy-11,14-diisopropyl-9,12,15,18-tetraoxo-1,1,1-triphenyl-17-tritylthiomethyl-2-thia-10,13,16,19-tetraazahenicos-5-en-21-oic acid

methyl (7R,11R,14R,17S,20S,E)-20-[(R)-1-(tert-butyldimethylsiloxy)ethyl]-7-hydroxy-11,14-diisopropyl-9,12,15,18-tetraoxo-1,1,1-triphenyl-17-tritylthiomethyl-2-thia-10,13,16,19-tetraazahenicos-5-en-21-oate

(2S,6R,9S,12R,13S)-12-((S)-sec-butyl)-13-hydroxy-6-methyl-2-[(E)-4-tritylthio-1-butenyl]-9-tritylthiomethyl-1-oxa-5,8,11-triaza-cyclopentadecane-4,7,10,15-tetraone

(12Z,22Z,24R,5S,8S)-5-isopropyl-24-methyl-8-((E)-4-((thiophen-2-ylmethyl)thio)but-1-en-1-yl)-24,25-dihydro-7-oxa-4,11-diaza-1(4,2),2(2,4)-dithiazolacyclododecaphane-3,6,10-trione