SMILES: C1=CC=C2C(=C1)C(=C(S2)/C=C/C(=O)C(=O)O)O
Description: The molecule is a 2-oxo monocarboxylic acid that is 2-oxobut-3-enoic acid in which one of the methyl hydrogens is substituted by a 3-hydroxy-1-benzothiophen-2-yl group. It is a 2-oxo monocarboxylic acid and a member of 1-benzothiophenes. It is a conjugate acid of a 4-(3-hydroxy-1-benzothiophen-2-yl)-2-oxobut-3-enoate.