[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][=C][C][=Branch2][Ring1][C][=C][Branch1][=N][C][=C][Ring1][=Branch1][S][=Branch1][C][=O][=Branch1][C][=O][O-1][O][C][N][=N][C][=C][Branch2][Ring1][#Branch1][C][=C][C][=C][Ring1][=Branch1][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][S][=Branch1][C][=O][=Branch1][C][=O][O-1][O].[Na+1].[Na+1]"}, {"from": "gpt", "value": "The molecule is a red azo dye that goes by several names including: Allura Red, Food Red 17, C.I. 16035, FD&amp;C Red 40, 2-naphthalenesulfonic acid, 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfophenyl)azo)-, disodium salt, and disodium 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfophenyl)azo)-2-naphthalene-sulfonate. It is used as a food dye and has the E number E129. Allura Red AC was originally introduced in the United States as a replacement for the use of amaranth as a food coloring. Allura Red AC is one of many High Production Volume Chemicals. Some manufacturers of Allura Red AC include: Asim Products, Sanchi Chemicals Pvt. Ltd., and Warner-Jenkinson Europe Ltd. Upon its introduction into the market, there were fears that Allura Red AC was carcinogenic; however, studies have since shown that this is not the case.[citation needed] The initial reports of its consumption causing tumors have since been shown to have been caused by the presence of para-cresidine.[citation needed] Although para-cresidine is an important reactant in the manufacture of Allura Red AC and is a known carcinogen, further studies conducted since have found no trace of para-cresidine to be present in food-grade Allura Red AC.[citation needed]."}]