(1α,5α)-2β,6,6-Trimethylbicyclo[3.1.1]heptane-3α-carboxylic acid

(1R,5S)-2β,6,6-Trimethylbicyclo[3.1.1]heptane-3α-carboxylic acid

[1R-(1alpha,2beta,3alpha,5alpha)]-2,6,6-trimethylbicyclo[3.1.1]heptane-3-carboxylic acid