SMILES: C(=C/O)\\C(=C/C(=O)C(=O)O)\\C(=O)O
Description: The molecule is a carboxy-2-hydroxymuconate semialdehyde having the carboxy group at the 4-position and the aldehyde functijon at the 6-position. It is a conjugate acid of a 4-carboxy-2-hydroxy-cis,cis-muconate 6-semialdehyde(2-).