108790-79-0 5',7'-Dimethylspiro(cyclopentane-1,2'-(1,3)diazatricyclo(3.3.1.1(sup 3,7))decan)-6'-one 5,7-Dimethyl-6-oxo-spiro(1,3-diazaadamantane-2,1'-cyclopentane) Spiro(cyclopentane-1,2'-(1,3)diazatricyclo(3.3.1.1(sup 3,7))decan)-6'-one, 5',7'-dimethyl-