19-Nor-17-alpha-pregn-5(10)-en-20-yn-3-one;17-alpha-Ethynylestra-delta(sup 5)-10-enolone;AC1L48XY;LS-97418;(8S,9S,13S,14S,17S)-17-ethynyl-13-methyl-2,4,6,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-one;13081-50-0
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