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Esters of 5, 11-dioxygenated-delta-des-a-estrene-17beta-ol; esters of 5-oxygenated-delta-des-a-estrene-17beta-ol; esters of 5-oxygenated-9alpha, 11alpha-epoxy-des-a-estrane-17beta-ol and process
Esters of 5, 11-dioxygenated-delta-des-a-estrene-17beta-ol; esters of 5-oxygenated-delta-des-a-estrene-17beta-ol; esters of 5-oxygenated-9alpha, 11alpha-epoxy-des-a-estrane-17beta-ol and process