10-hydroperoxy-17-hydroxy-7-methyl-19-nor-10,17-pregn-4-en-20-yn-3-one; 10-hydroperoxy 4-Tibolone; 10-hydroperoxy 4-ene-Tibolone; (7R,8S,9S,10S,13S,14S,17R)-17-ethynyl-10-hydroperoxy-17-hydroxy-7,13-dimethyl-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3(2H)-one