7505-25-1

4'-acetyl-3',6',10,11b-tetramethylspiro[2,4,4a,5,6,6a,6b,7,8,10,10a,11a-dodecahydro-1h-benzo[a]fluorene-9,2'-3,3a,5,6,7,7a-hexahydrofuro[3,2-b]pyridine]-3,11-dione