18,19-Dinor-17a-pregna-4,9,11-trien-20-yn-3-one,13-ethyl-17-hydroxy- (8CI);13-Ethyl-17a-ethynyl-17b-hydroxygona-4,9,11-trien-3-one;Dimetriose;Dimetrose;Nemestran;R 2323;RU 2323;Tridomose;
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