[{"from": "human", "value": "Please give me some details about this molecule. [C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=Branch1][N][=C][C][=C][C][=C][C][Ring1][=Branch1][=N][Ring1][O][N]"}, {"from": "gpt", "value": "The molecule is also used as an intracellular pH indicator."}]