[{"from": "human", "value": "Describe this molecule. [C][C][=C][C][=Branch1][C][=O][C][C][C][Ring1][#Branch1][C][Ring1][Ring2][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule is a carbobicyclic compound that is bicyclo[3.1.1]heptane which is substituted by an oxo group at position 2 and by methyl groups at positions 4, 6 and 6, and which contains a double bond between positions 3 and 4. It is a carbobicyclic compound, a cyclic ketone and an enone."}]