9b'-hydroxy-4'-methyl-2'H-spiro[cyclohexane-1,1'-naphtho[2,1-b]furan]-5'(9b'H)-one

2-羟基-3-甲基-1,4-萘醌

(3a'R,8a'R)-3a'-hydroxy-8a'-methyl-3a',8a'-dihydro-2'H-spiro[cyclohexane-1,3'-cyclopenta[a]indene]-1',8'-dione

(2aS,3aS,8bS)-8b-hydroxy-3a-methyl-2H,3aH-spiro[cyclobuta[1,2]naphtho[2,3-b]oxirene-1,1'-cyclohexan]-4(8bH)-one