81969-72-4;81969-71-3;Syn-Tricyclo[6.1.0.02,4]nonane;Tricyclo[6.1.0.0]nonane-(1.alpha.,2.alpha.,4.alpha.,8.alpha.)-;Anti-Tricyclo[6.1.0.02,4]nonane;Tricyclo[6.1.0.0]nonane-(1.alpha.,2.beta.,4.beta.,8.alpha.)-;Tricyclo(6.1.0.0)nonane, (1alpha,2alpha,4alpha,8alpha)-;Tricyclo(6.1.0.0)nonane, (1alpha,2beta,4beta,8alpha)-