SMILES: C=C(C(=O)O)OP(=O)(C(=O)O)O
Description: The molecule is an organic phosphonate having O-1-carboxyvinyl and C-carboxy substituents. It is an organic phosphonate and a phosphonic ester. It is a conjugate acid of a 1-carboxylatovinyl carboxylatophosphonate(3-).