英文别名
methyl (4aS*)-4a-methyl-2,5-dioxo-3,4,4a,6,7,8-hexahydronaphthalenecarboxylate 5-ethylene acetal;Methyl 1,1-(ethylenedioxy)-6-oxo-8aβ-methyl-1,2,3,4,6,7,8,8a-octahydronaphthalene-5-carboxylate;methyl 4'a-methyl-2'-oxospiro[1,3-dioxolane-2,5'-4,6,7,8-tetrahydro-3H-naphthalene]-1'-carboxylate