Using OCCO, O=C(O)c1cccc2c1N=C(c1ccccc1Cl)CC2=O to produce O=C1CC(c2ccccc2Cl)=Nc2c1cccc2C(=O)OCCO, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.