2-[(4S,5R,6S,7R,9R,11E,13Z,15R,16S)-6-{[(2R,3R,4R,5S,6R)-5-{[(2S,4R,5S,6S)-4,5-dihydroxy-4,6-dimethyl-3,4,5,6-tetrahydro-2H-pyran-2-yl]oxy}-4-(dimethylamino)-3-hydroxy-6-methyl-3,4,5,6-tetrahydro-2H-pyran-2-yl]oxy}-15-({[(2S,3S,4S,5S,6S)-5-hydroxy-3,4-dimethoxy-6-methyl-3,4,5,6-tetrahydro-2H-pyran-2-yl]oxy}methyl)-16-ethyl-4-hydroxy-5,9,13-trimethyl-2,10-dioxooxacyclohexadeca-11,13-dien-7-yl]acetaldehyde 2,3-dihydroxybutanedioic acid