[{"from": "human", "value": "Describe this molecule. [C][=C][Branch2][Ring1][C][C][=Branch1][=Branch2][=C][Branch1][Ring2][N][Ring1][Branch1][C][NH3+1][C][C][=Branch1][C][=O][O-1][C][C][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is conjugate base of porphobilinogen arising from deprotonation of the two carboxy groups and protonation of the amino group; major species at pH 7.3. It has a role as a human metabolite and a Saccharomyces cerevisiae metabolite. It is a conjugate base of a porphobilinogen."}]