IUPAC: (2E)-3-[(4S,7R,7aR)-3,7-dimethyl-2,4,5,6,7,7a-hexahydro-1H-inden-4-yl]-2-methylprop-2-enoic acid

SMILES: [H][C@]12CCC(C)=C1[C@@H](CC[C@H]2C)\C=C(/C)C(O)=O |c:5|