SMILES: CCO/C=C/1\\C(=O)OC(=N1)C2=CC=C(C=C2)[N+](=O)[O-]
Description: The molecule is a 1,3-oxazolone derivative having a nitrophenyl substituent at the 2-position, an ethoxymethylene group at the 4-position, and an oxo group at the 5-position. It has a role as a hapten. It is a gamma-lactone and a member of 1,3-oxazoles.