(3R,7S,10S,13S,16S)-3-[(2S)-2-[[(2S)-1-[(2-amino-2-oxoethyl)amino]-4-methyl-1-oxopentan-2-yl]carbamoyl]pyrrolidine-1-carbonyl]-10-(3-amino-3-oxopropyl)-13-[(2S)-butan-2-yl]-16-[(4-methoxyphenyl)methyl]-5,9,12,15,18-pentaoxo-1-thia-4,8,11,14,17-pentazacyclohenicosane-7-carboxylic acid;2,2,2-trifluoroacetic acid