(4R)-5,10-Secoestra-4,5-diene-3,10,17-trione 1H-Cyclodec(e)indene-3,6,9(2H)-trione, 11,12-didehydro-3a,4,5,5a,7,8,12,13,13a,13b-decahydro-3a-methyl-, stereoisomer 60398-18-7