(11beta,16alpha,17beta)-11-Ethyl-16-fluoroestra-1,3,5(10)-triene-3,17-diol 11-Et-Fes 11-Ethyl-16-fluoroestradiol 129000-39-1 Estra-1,3,5(10)-triene-3,17-diol, 11-ethyl-16-fluoro-, (11beta,16alpha,17beta)-