19-Norkauran-18-oicacid, 15b,17-epoxy-2b-hydroxy- (8CI);Isoatractyligenin (7CI); 1H-2b,11-Methanonaphtho[1',2':6,7]cyclohept[1,2-b]oxete,19-norkauran-18-oic acid deriv.
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