(10R,12S)-N-[(1S,4S,7S,12S,13S,16R,17R,19S,22S,26R)-16-[(2-aminoethyl)(nitroso)amino]-7-[(1R)-3-amino-1-hydroxypropyl]-4-[(1S,2S)-1,2-dihydroxy-2-(4-hydroxyphenyl)ethyl]-12,17,26-trihydroxy-22-[(1R)-1-hydroxyethyl]-2,5,8,14,20,23-hexaoxo-3,6,9,15,21,24-hexazatricyclo[22.3.0.09,13]heptacosan-19-yl]-10,12-dimethyltetradecanamide