[{"from": "human", "value": "Provide a brief overview of this molecule. [C][=C][C][=Branch2][Ring1][Ring1][=C][C][=C][C][=C][Branch1][Ring2][N][Ring1][Branch1][C][=C][C][=C][C][=N][Ring1][Branch1][N][=C][Ring1][P]"}, {"from": "gpt", "value": "The molecule is a tripyrrole in which the three 1H-pyrrole rings are linked by eth-1-yl-2-ylidene groups"}]