4,4-Dimethyltricyclo(6.3.0.0(1,7))undecane-2,6-dione

4,4-Dimethyltricyclo(6.3.0.0(1,7))undecane-2,6-dione

4,4-Dimethyltricyclo[6.3.0.0(1,7)]undecane-2,6-dione

6,6-Dimethylhexahydrocyclopenta[1,3]cyclopropa[1,2][7]annulen-4,8(1H,5H)-dion

6,6-Dimethylhexahydrocyclopenta[1,3]cyclopropa[1,2][7]annulene-4,8(1H,5H)-dione

6,6-Diméthylhexahydrocyclopenta[1,3]cyclopropa[1,2][7]annulène-4,8(1H,5H)-dione

Cyclopenta[1,3]cyclopropa[1,2]cycloheptene-4,8(1H,5H)-dione, hexahydro-6,6-dimethyl-

6,6-Dimethylhexahydrocyclopenta[2,3]cyclopropa[1,2-a]cycloheptene-4,8(1H,5H)-dione