[{"from": "human", "value": "Could you provide a description of this molecule? [C][Branch1][#Branch2][13CH1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][13C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a racemate comprising equimolar amounts of L-aspartic acid-1,4-(13)C2 and D-aspartic acid-1,4-(13)C2. It is a (13)C-modified compound and a racemate. It contains a D-aspartic acid-1,4-(13)C2 and a L-aspartic acid-1,4-(13)C2."}]