[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][C][=C][C][C][C][=Branch1][Ring2][=N][Ring1][Branch1][C][=C][C][=C][C][=Branch2][Ring1][=Branch2][=C][C][=N][C][=Branch1][#C][=C][C][=C][C][Ring2][Ring1][Branch1][=C][Ring2][Ring1][Ring2][N][Ring1][Branch1][C][=C][Ring1][O][N][Ring1][P]"}, {"from": "gpt", "value": "The molecule is a cyclic tetrapyrrole that consists of porphyrin that has a cyclopentane ring fused to one of the pyrrole rings and the adjacent methine group. The parent of the class of phorbines."}]