英文同义词
13-ethyl-17-hydroxy-11-methylene-(17α)-18,19-Dinorpregn-5-en-20-yn-3-one cyclic 1,2-ethanediyl acetal;18,19-Dinorpregn-5-en-20-yn-3-one, 13-ethyl-17-hydroxy-11-methylene-, cyclic 1,2-ethanediyl acetal, (17α)- (9CI);13beta-ethyl-11-methyliden-18,19-dinor-17beta-hydroxy-17alpha-pregn-5-en-20-yn-3,3-ethylene oxoketal