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(6S,9S,12S)-12-benzyl-N-(3-hydroxypropyl)-6,9-dimethyl-4,7,10,13-tetraoxo-4,5,6,7,8,9,10,11,12,13,14,15-dodecahydrofuro[2,3-l][1,4,7,10]tetraazacyclotetradecine-2-carboxamide
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tert-butyl (2-((6S,9S,12S)-12-benzyl-6,9-dimethyl-4,7,10,13-tetraoxo-4,5,6,7,8,9,10,11,12,13,14,15-dodecahydrofuro[2,3-l][1,4,7,10]tetraazacyclotetradecine-2-carboxamido)ethyl)carbamate
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(6S,9S,12S)-N-(2-aminoethyl)-12-benzyl-6,9-dimethyl-4,7,10,13-tetraoxo-4,5,6,7,8,9,10,11,12,13,14,15-dodecahydrofuro[2,3-l][1,4,7,10]tetraazacyclotetradecine-2-carboxamide 2,2,2-trifluoroacetate
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(6S,9S,12S)-6,9-dibenzyl-N-(3-hydroxypropyl)-12-methyl-4,7,10,13-tetraoxo-4,5,6,7,8,9,10,11,12,13,14,15-dodecahydrofuro[2,3-l][1,4,7,10]tetraazacyclotetradecine-2-carboxamide