(2R,3S,4R,5R)-N-{3-[(4R)-4-[(1S,2S,5R,7S,10R,11R,14S,15R,16S)-5,16-dihydroxy-2,15-dimethyltetracyclo[8.7.0.0?,?.0??,??]heptadecan-14-yl]-N-(3-{[(2R,3S,4R,5R)-1,2,3,4,5,6-hexahydroxyhexylidene]amino}propyl)pentanamido]propyl}-2,3,4,5,6-pentahydroxyhexanimidic acid