9-{[(15E)-2-{1-[(2S,3R,4S,5S)-5-{[(2S,3S)-3-[(2S,3S)-3-hydroxybut-2-yl]oxiran-2-yl]oxy}-3,4-dihydroxy-3,4,5,6-tetrahydro-2H-pyran-2-yl]prop-2-yl}-17-[(2S,3R,4R,5S)-5-{[(2S,3S)-3-[(2S,3S)-3-hydroxybut-2-yl]oxiran-2-yl]methyl}-3,4-dihydroxy-3,4,5,6-tetrahydro-2H-pyran-2-yl]-16-methyl-1,4,14-trioxo-3,13-dioxaheptadec-15-en-1-yl]oxy}nonanoic acid