(8R,9S,13S,14S)-17-ethynyl-13-methyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthrene-3,4,17-triol

(The order shall be subject to the English name)

English alias：19-Norpregna-1,3,5(10)-trien-20-yne-3,4,17alpha-triol; 17alpha-ethynyl-4-hydroxyestradiol; 17 A-Ethynylestra-1,3,5(10)-triene-3,4,17 A-triol; 19-Nor-17 A-pregna-1,3,5(10)-trien-20-yne-3,4,17-triol; 4-Hydroxyethynylestradiol; (17 A)-19-Norpregna-1,3,5(10)-trien-20-yne-3,4,17-triol;
CAS：50394-90-6 Molecular formula：C₂₀H₂₄O₃ Molecular weight：312.40