for the following products
3-Ethylenedioxy-estra-5(10),9(11)-dien-17-one | Cyclic-3-(1,2-ethanediyl acetal)-estra-5(10),9(11)-dien-3,17-dione | Estra-5(10),9(11)-diene-3,17-dione 3-ethylene ketal | Estradiene dione-3-ketal | Ethylene deltenone and 3-Ethylenedioxy-17-oxo-13-beta-methyl-estra-5,(10),9,(11)-diene
