2-[((S)-2-tert-Butoxycarbonylamino-3-methyl-butyrylamino)-methyl]-5-methyl-oxazole-4-carboxylic acid methyl ester

2-[(S)-1-({2-[((S)-2-Amino-3-methyl-butyrylamino)-methyl]-5-methyl-oxazole-4-carbonyl}-amino)-ethyl]-thiazole-4-carboxylic acid ethyl ester

2-[(S)-1-({2-[((S)-2-tert-Butoxycarbonylamino-3-methyl-butyrylamino)-methyl]-5-methyl-oxazole-4-carbonyl}-amino)-ethyl]-thiazole-4-carboxylic acid ethyl ester

(12Z,32Z,72Z,112Z,4S,8S,15S)-15-isopropyl-35,115,4,8-tetramethyl-6,10,14,17-tetraoxo-5,9,13,16-tetraaza-3,11(4,2)-dioxazola-1(2,4),7(4,2)-dithiazola-2(3,2)-pyridinacycloheptadecaphane-26-carbaldehyde

(12Z,32Z,72Z,112Z,4S,8S,15S)-15-isopropyl-35,115,4,8-tetramethyl-6,10,14,17-tetraoxo-5,9,13,16-tetraaza-3,11(4,2)-dioxazola-1(2,4),7(4,2)-dithiazola-2(3,2)-pyridinacycloheptadecaphane-26-carboxylic acid