CAS No 88899-55-2 , Oxacyclohexadeca-3,5,11,13-tetraen-2-one,8-hydroxy-16-[(1S,2R,3S)-2-hydroxy-1-methyl-3-[(2R,4R,5S,6R)-tetrahydro-2,4-dihydroxy-5-methyl-6-(1-methylethyl)-2H-pyran-2-yl]butyl]-3,15-dimethoxy-5,7,9,11-tetramethyl-,(3Z,5E,7R,8S,9S,11E,13E,15S,16R)-