[{"from": "human", "value": "Describe this molecule. [C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][C][=C][C][=C][C][Ring1][=Branch1][=N][Ring1][#Branch2]"}, {"from": "gpt", "value": "The molecule is a carbazole. It is a tautomer of an 8aH-carbazole, a 9H-carbazole, a 3H-carbazole and a 1H-carbazole."}]