131811-54-6 EM 139 EM 170 EM-139 Estra-1,3,5(10)-triene-7-undecanamide, N-butyl-16-chloro-3,17-dihydroxy-N-methyl-, (7alpha,16alpha,17beta)- N-n-Butyl-N-methyl-11-(16'alpha-chloro-3',17'beta-dihydroxyestra-1',3',5'(10')-trien-7'alpha-yl)undecanamide