[{"from": "human", "value": "Please give me some details about this molecule. [C][C][=C][Branch2][#Branch1][=N][C][=C][C][=N][C][=Branch2][=Branch1][=Branch1][=C][C][=C][Branch2][Branch1][=Branch2][C][=Branch2][Branch1][Ring2][=C][Branch1][Ring2][N][Ring1][Branch1][C][=C][C@][Branch2][Ring2][#Branch1][C@H1][Branch2][Ring1][=C][C][=Branch2][Ring1][Branch1][=C][C][=C][Ring1][=Branch1][C][=Branch1][Ring2][=N][Ring1][=Branch2][C][=C][Ring2][Ring1][=Branch2][N][Ring2][Ring1][Branch2][C][=Branch1][C][=O][O][C][=Branch1][C][=O][O][C][C][C][C][C][=Branch1][C][=O][O][C][=Branch1][=Branch1][=C][Ring2][Ring2][Branch1][C][C][C][C][=Branch1][C][=O][O][C][=C]"}, {"from": "gpt", "value": "The molecule is 2,2(1)-Dihydrobenzo[b]porphyrin-13,17-dipropanoic acid substituted by carboxy groups at positions 2(1) and 2(2), an ethenyl group at position 8, and methyl groups at positions 2, 7, 12 and 18 (the 2S,2(1)R-enantiomer). It is a tetracarboxylic acid and a beta-substituted porphyrin. It is an enantiomer of a (2R,2(1)S)-2(1),2(2)-dicarboxy-8-ethenyl-2,7,12,18-tetramethyl-2,2(1)-dihydrobenzo[b]porphyrin-13,17-dipropanoic acid."}]