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3,20-Ë«(ÑÇÒÒ¶þÑõ»ù)-19-È¥¼×ÔÐçÞ-5(10)9(11)¶þÏ©-17-´¼
3,20-Bis(ethylenedioxy)-19-norpregna-5(10)9(11)dien-17-ol;
3,20-Bis(ethylenedioxy)-19-norpregna-5(10)9(11)dien-17-ol;
17-Hydroxy-19-norpregna-5(10),9(11)-diene-3,20-dione cyclic bis(1,2-ethanediyl acetal)
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