cis,cis-4-Hydroxymuconic semialdehyde COMPOUNDDESCRIPTIONEawag BBD compound c0262 SMILES: C(=C/C(=O)[O-])/C(=C\C=O)/O Your Options: Update the Compound: POST with (required) compoundName and (optional) compoundDescription. Delete the Compound: DELETE.