[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a doubly-charged N-acyl-L-alpha-amino acid anion resulting from deprotonation of both carboxy groups of N-acetyl-L-aspartic acid. It has a role as an antioxidant, a human metabolite, a mouse metabolite and a rat metabolite. It is a N-acyl-L-alpha-amino acid anion and a dicarboxylic acid dianion. It is functionally related to a L-aspartate(2-). It is a conjugate base of a N-acetyl-L-aspartic acid."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][N][C@@H1][Branch1][#Branch1][C][C][=Branch1][C][=O][O-1][C][=Branch1][C][=O][O-1]"}]