IUPAC:(4aS,4bR,10aR,10bS,12aS)-10a,12a-dimethyl-2H,3H,4H,4aH,4bH,5H,6H,8H,9H,10H,10aH,10bH,11H,12H,12aH-phenanthro[2,1-b]pyran-2,8-dione
IUPAC:(4aS,4bR,10aR,10bS,12aS)-10a,12a-dimethyl-2H,3H,4H,4aH,4bH,5H,6H,8H,9H,10H,10aH,10bH,11H,12H,12aH-phenanthro[2,1-b]pyran-2,8-dione