. "19-Norpregna-1,3,5(10)-trien-20-yn-17-ol, 3-(cyclopentyloxy)-, (17alpha)-"@en . . "Quinestrol"@en . "Quinestrol"@en . "C0034410" . "Ethinyl Estradiol 3-Cyclopentyl Ether"@en . . "D011800" . . . .