[(5aS)-3,5a,9-trimethyl-2-oxo-4,5,6,7-tetrahydrobenzo[g][1]benzofuran-8-yl] acetate

(3,6,9-trimethyl-2-oxo-3a,4,5,9b-tetrahydro-3H-benzo[g][1]benzofuran-8-yl) acetate

1,4-二甲基萘

(3S)-8-羟基亚胺-3abeta,4,5,5a,8,9balpha-六氢-3beta,5aalpha,9-三甲基萘并[1,2-b]呋喃-2(3H)-酮

ethyl 3-oxoeudesma-4,6-diene-12-oate 2,4-dinitrophenylhydrazone