Synonyms: 6H-Dibenzo[b,d]pyran-9-carboxylicacid, 6a,7,8,10a-tetrahydro-1-hydroxy-6,6-dimethyl-3-pentyl-, trans-(?à)-; (?à)-11-Nor-D9-tetrahydrocannabinol-9-carboxylic acid;6H-Dibenzo[b,d]pyran-9-carboxylic acid,6a,7,8,10a-tetrahydro-1-hydroxy-6,6-dimethyl-3-pentyl-, trans-