SMILES: C1=CC(=C(C(=C1)O)O)C2=C(C(=CC=C2)O)O
Description: The molecule is a biphenyl that has four hydroxy groups attached to the benzenoid ring system (position 2,2',3 and 3'); majos species at pH 7.3 It is a member of catechols and a member of hydroxybiphenyls.