Robuta

https://webbook.nist.gov/cgi/inchi/InChI%3D1S/C12H20/c1-11-6-3-7-12(11%2C2)10-5-4-9(11)8-10/h9-10H%2C3-8H2%2C1-2H3 (3aR,4S,7R,7aS)-3a,7a-Dimethyloctahydro-1H-4,7-methanoindene