Using CC(=O)OC1N=C(c2ccccc2F)c2cc(Cl)ccc2-c2ncncc21 to produce OC1N=C(c2ccccc2F)c2cc(Cl)ccc2-c2ncncc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.