17-Acetyl-10,13-dimethyl-6,7,8,10,12,13,14,15octahydro-cyclopenta[a]phenathren-3;DESOXY-TETRAENE(5-ST);17-ACETYL-10,13-DIMETHYL-6,7,8,10,12,13,14,15-OCTAHYDRO-CYCLOPENTA[A]PHENANTHREN-3-ONE;PREGAN-1,4,9(11)16-TETRAENE-3,20-DIONE;17-Acetyl-10,13-dimethyl-6,7,8,10,12,13,14,15-octahydrocyclopenta[a]phenathren-3-one;1,4,9(11),16-Tetraenepregna-3,20-dione;Methyl-tetraene Matter