7,7-Dimethylbicyclo[2.2.1]heptane-1-carboxylic acid
(1R,5S)-6,6-Dimethylbicyclo[3.1.1]heptan-2-one
6,6-Dimethylbicyclo[3.1.1]hept-2-ene-2-carboxylic acid
