N-[(2S)-2-({[(2S)-1-{[(4R,7S,10S,13S,16S,19R)-19-amino-13-[(2S)-but-2-yl]-10-(2-carboxyethyl)-7-(carboxymethyl)-16-[(4-hydroxyphenyl)methyl]-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentazacycloicosan-4-yl]carbonyl}tetrahydro-1H-pyrrol-2-yl]carbonyl}amino)-4-methyl-1-oxopentyl]glycine 2,2,2-trifluoroacetic acid