75347-04-5 SOEP Spiro(estra-1,3,5(10),6,8-pentaene-17,2'-oxiran)-3-ol Spiro(estra-1,3,5,7,9-pentaene-17,2'-oxiran)-3-ol, (17beta)- Spiro-17beta-oxiranylestra-1,3,5(10),6,8-pentaene-3-ol