[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is the conjugate base of glyoxylic acid. It has a role as a human metabolite and a Saccharomyces cerevisiae metabolite. It is a conjugate base of a glyoxylic acid."}, {"from": "gpt", "value": "[C][=Branch1][C][=O][C][=Branch1][C][=O][O-1]"}]