Halcinonide Impurity 11

Chemical Name: (2R,6aR,8aS,8bS,11aR,12aS,12bS)-8b-(2-chloroacetyl)-2-hydroxy-6a,8a,10,10-tetramethyl-1,5,6,6a,6b,8,8a,8b,11a,12,12a,12b-dodecahydro-4H-naphtho[2',1':4,5]indeno[1,2-d][1,3]dioxole-4,7(2H)-dione