5a-Spirost-9(11)-en-3b-ol, (25R)- (8CI); Tigogenin,9,11-didehydro- (7CI); Spiro[8H-naphth[2',1':4,5]indeno[2,1-b]furan-8,2'-[2H]pyran],spirost-9(11)-en-3-ol deriv.; 3b-Hydroxy-5a,20a,25R-spirost-9-ene
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