SMILES: C1=CC(=CC=C1N=NC2C(=NN(C2=O)C3=CC=C(C=C3)S(=O)(=O)[O-])C(=O)[O-])S(=O)(=O)[O-]
Description: The molecule is an organosulfonate oxoanion which is also a monocarboxylic acid anion obtained by deprotonation of the sulfo and carboxy groups of tartrazine acid. It is a monocarboxylic acid anion and an organosulfonate oxoanion. It is a conjugate base of a tartrazine acid.