68799-88-2 Polhovolide Propanoic acid, 2-methyl-, 3,6-bis(acetyloxy)-2,3,3a,4,5,6,6a,7,9a,9b-decahydro-3,6,9-trimethyl-2-oxoazuleno(4,5-b)furan-4-yl ester, (3S-(3alpha,3aalpha,4alpha,6beta,6abeta,9abeta,9balpha))-