[{"from": "human", "value": "Provide a description of this molecule. [C][=Branch1][C][=O][N][C][=N][C][=Branch1][C][=O][N][C][=N][C][=Branch1][C][=O][N][=C][Branch1][=Branch1][N][Ring1][N][Ring1][#Branch1][N][Ring1][S]"}, {"from": "gpt", "value": "The molecule is a cyameluric acid. It is a tautomer of a 1,3,4,6,7,9,9b-heptaazaphenalene-2,5,8(1H,3H,6H)-trione and a 1,3,4,6,7,9,9b-heptaazaphenalene-2,5,8(1H,4H,7H)-trione."}]