[(6Z,10E)-6,10-dimethyl-3-methylidene-2-oxo-3a,4,5,8,9,11a-hexahydrocyclodeca[b]furan-4-yl] (E)-4-hydroxy-2-(hydroxymethyl)but-2-enoate 生成 [(10E)-7-hydroperoxy-10-methyl-3,6-dimethylidene-2-oxo-4,5,7,8,9,11a-hexahydro-3aH-cyclodeca[b]furan-4-yl] (E)-4-hydroxy-2-(hydroxymethyl)but-2-eneperoxoate