[{"from": "human", "value": "Please give me some details about this molecule. [C][C][=C][C][C@@][Branch2][Ring1][Ring2][C][C@H1][Ring1][=Branch1][C@][Branch1][N][C@@][Ring1][Branch1][Branch1][=Branch1][C][C][C][Ring1][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule is a carbotricyclic compound and sesquiterpene that is 1,2,3,3a,4,5,8,8a-octahydro-4,8-methanoazulene that is substituted by methyl groups at the 3a, 4, 7 and 8a positions (the 3aR,4R,8R,8aS-diastereoisomer). It is a sesquiterpene and a carbotricyclic compound."}]