[{"from": "human", "value": "Provide a description of this molecule. [C][=C][C][=C][Branch2][Ring2][O][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=C][C][=C][Branch2][Ring1][=N][C][=Branch1][C][=O][C][=C][Ring1][#Branch1][O][C][=C][Branch1][#C][C][=Branch1][O][=C][Branch1][#Branch1][C][=C][Ring1][#C][Ring1][=Branch1][Br][O-1][Hg][Br][C][=Branch1][C][=O][O-1].[O].[Na+1].[Na+1]"}, {"from": "gpt", "value": "The molecule is an organic sodium salt that is 2,7-dibromo-4-hydroxymercurifluorescein in which the carboxy group and the phenolic hydroxy group have been deprotonated and the resulting charge is neutralised by two sodium ions. It has a role as an antiseptic drug, a fluorochrome and a histological dye. It contains a 2,7-dibromo-4-hydroxymercurifluorescein(2-)."}]