(1S,2R,6S,7R,9R,11R,14R,15S)-15-((1S)-1-((2R)-4,5-dimethyl-6-oxo-2,3-dihydropyran-2-yl)ethyl)-6,14-dihydroxy-2,15-dimethyl-8-oxapentacyclo(9.7.0.02,7.07,9.012,16)octadeca-4,12(16)-dien-3-one
(1s,2r,6s,7r,9r,11r,14r,15s)-15-((1s)-1-((2r)-4,5-dimethyl-6-oxo-2,3-dihydropyran-2-yl)ethyl)-6,14-dihydroxy-2,15-dimethyl-8-oxapentacyclo(9.7.0.02,7.07,9.012,16)octadeca-4,12(16)-dien-3-one