(6aS,9aR,9bS)-6a-ethyloctahydro-4H-pyrrolo[3,2,1-ij]quinoline-4,9(2H)-dione

(3aS,7aR)-7a-ethyl-4-(2-hydroxyethyl)-5',5'-dimethylhexahydrospiro[indene-5,2'-[1,3]dioxan]-3(2H)-one

6aref-Ethyl-9-oxo-(9acisH,9btransH)-perhydro-pyrrolo<3,2,1-ij>chinolin