[{"from": "human", "value": "What can you tell me about this molecule? [C][C][O][C][=Branch1][C][=O][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=C][C][=C][Branch2][Ring1][P][C][=Branch1][C][=O][C][=Branch2][Ring1][Branch2][=C][Ring1][#Branch1][O][C][=C][Branch1][#C][C][=Branch1][O][=C][Branch1][#Branch1][C][=C][Ring1][#C][Ring1][=Branch1][Br][O-1][Br][Br][Br].[K+1]"}, {"from": "gpt", "value": "The molecule is an organic potassium salt having 2,4,5,7-tetrabromo-9-{2-[(ethyloxy)carbonyl]phenyl}-3-oxo-3H-xanthen-6-olate as the counterion. It has a role as a fluorochrome, a histological dye and a photosensitizing agent. It contains an ethyl eosin anion."}]