(2R,3S,4S,5S,6R)-6-({[(3E,5E,8S,10E,11S,12R,13E,15E,18S)-12-{[(2R,3S,4R,5S)-3,4-dihydroxy-6,6-dimethyl-5-[(2-methylpropanoyl)oxy]-3,4,5,6-tetrahydro-2H-pyran-2-yl]oxy}-11-ethyl-8-hydroxy-18-[(1R)-1-hydroxyethyl]-9,13,15-trimethyl-2-oxooxacyclooctadeca-3,5,9,13,15-pentaen-3-yl]methyl}oxy)-4-hydroxy-5-methoxy-2-methyltetrahydropyran-3-yl 3,5-dichloro-2-ethyl-4,6-dihydroxybenzoate