Using NOCc1ccc(C(=O)O)cc1, O=C(Cl)OCC1c2ccccc2-c2ccccc21 to produce O=C(NOCc1ccc(C(=O)O)cc1)OCC1c2ccccc2-c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.