SMILES: C1=CC(=C(C(=C1)C(=O)O)O)C=O
Description: The molecule is a hydroxybenzoic acid that is salicylic acid in which the hydrogen at position 3 is substituted by a formyl group. It is an aldehyde, a member of phenols and a monohydroxybenzoic acid. It derives from a salicylic acid.