9b-Pregna-1,4-diene-3,20-dione,9,11b-epoxy-17,21-dihydroxy-16b-methyl- (6CI,7CI,8CI);9,11b-Epoxy-17,21-dihydroxy-16b-methyl-9b-pregna-1,4-diene-3,20-dione;Betamethasone 9,11-epoxide;
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