[{"from": "human", "value": "Could you provide a description of this molecule? [C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=Branch2][Ring1][O][=C][C][=C][Branch1][S][C][=Branch1][C][=O][C][=Branch1][C][=O][C][Ring1][Branch2][=C][Ring1][=N][O][N][=C][C][=C][Ring1][=N][O]"}, {"from": "gpt", "value": "The molecule is an organic heterotetracyclic compound that is naphtho[2,3-f]quinoline-7,12-dione carrying two additional hydroxy groups at positions 5 and 6. Used as an acid-base indicator. Between pH 0.0 and pH 1.6 it changes from pink to yellow, and between pH 6.0 and pH 7.6 it changes from yellow to green. It has a role as an acid-base indicator. It is an organic heterotetracyclic compound, a member of phenols and a member of p-quinones."}]