4-((3S,4S,7R,10S,13S,17R,18R,E)-7-((1H-indol-3-yl)methyl)-3-methoxy-8,10,13,15,17,18-hexamethyl-2,6,9,12-tetraoxo-1-oxa-5,8,11-triazacyclooctadec-15-en-4-yl)benzamide

methyl (2S,3S)-3-amino-3-(4-carbamoylphenyl)-2-methoxypropanoate

(2S,3S)-methyl 3-azido-3-(4-carbamoylphenyl)-2-methoxypropanoate

(2S,3S)-methyl 3-amino-3-(4-cyanophenyl)-2-methoxypropanoate