The story
From me(thoxy) + estra(trie)ne + -ol.
Etymology from Wiktionary, CC BY-SA 4.0.
mestranol
Today it means: A synthetic estrogen used chiefly in oral contraceptives, in combination with a progestational agent; the 3-methyl ether of ethinylestradiol, C₂₁H₂₆O₂. Full definition →