Estra-1,3,5(10)-trien-17b-ol, 3-(2-propynyloxy)-, pivalate(8CI); Pivalic acid, 3-(2-propynyloxy)estra-1,3,5(10)-trien-17b-yl ester (8CI);3-(2-Propynyloxy)estra-1,3,5(10)-trien-17b-ol trimethylacetate; AY 20121
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