[{"from": "human", "value": "Please give me some details about this molecule. [C][C][N][Branch1][Ring1][C][C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][=Branch2][Ring1][C][=C][C][=C][C][=Branch1][Branch2][=N+1][Branch1][Ring1][C][C][C][C][C][=C][Ring1][O][C][=C][Branch1][P][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][S][=Branch1][C][=O][=Branch1][C][=O][O-1][S][=Branch1][C][=O][=Branch1][C][=O][O-1].[Na+1]"}, {"from": "gpt", "value": "The molecule is a synthetic visual lymphatic imaging agent.  Injected into the periphery of the tumor site, isosulfan blue localizes to the lymphatic system and aids in the surgical identification of tumor sentinel nodes which stain blue. (NCI04)"}]