SMILES: C1=CC(=CC=C1C(=O)O)C(=O)O
Description: The molecule is a benzenedicarboxylic acid carrying carboxy groups at positions 1 and 4. One of three possible isomers of benzenedicarboxylic acid, the others being phthalic and isophthalic acids. It is a conjugate acid of a terephthalate(1-).