10,13-dimethyl-4'-methylidenetetradecahydro-3'H-spiro[cyclopenta[a]phenanthrene-3,2'-furan]-5',17(2H,4'H)-dione

Order 56688-45-0 dimethyl,methylidenetetradecahydro,spiro,cyclopenta,phenanthrene,furan,dione
Furan
25254-78-84,14-Epoxy-1H-dibenzo[3,4:6,7]cyclohept[1,2-f]isobenzofuran-1,3,9-trione,3a,4,14,14a-tetrahydro-