Encelin

Dehydrofarinosin

(3aR)-3,5-Bismethylene-8aβ-methyl-3aα,4,4aα,8a,9,9aα-hexahydronaphtho[2,3-b]furan-2,6(3H,5H)-dione

(3aR)-3aα,4aα,5,8a,9,9aα-Hexahydro-8aβ-methyl-3,5-bis(methylene)naphtho[2,3-b]furan-2,6(3H,4H)-dione