SMILES: C(C[NH+](CC(=O)[O-])CC(=O)[O-])[NH+](CC(=O)[O-])CC(=O)[O-]
Description: The molecule is the tetracarboxylic acid anion formed by deprotonation of two of the four carboxy groups in ethylenediaminetetraacetic acid (EDTA). It is a conjugate base of an ethylenediaminetetraacetic acid. It is a conjugate acid of an EDTA(3-).