5b-Androstane-17b-carboxylic acid, 11b-hydroxy-3,18-dioxo-, cyclic 18,11-hemiacetal,g-lactone (7CI);1,12-Epoxy-1H,3H-naphth[2',1':4,5]indeno[1,7a-c]furan, androstane-17-carboxylicacid deriv.
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