3-[(6S,9S,15S)-6-(2-amino-2-oxoethyl)-12-butan-2-yl-15-[(4-hydroxyphenyl)methyl]-3-[2-[[1-[(2-methoxy-2-oxoethyl)amino]-4-methyl-1-oxopentan-2-yl]carbamoyl]pyrrolidine-1-carbonyl]-5,8,11,14,17-pentaoxo-1-thia-4,7,10,13,16-pentazacycloicos-9-yl]propanoic a