Using COC(=O)c1cc(C2CCCN2c2cc(F)cc(F)c2)c2oc(N3CCOCC3)cc(=O)c2c1 to produce O=C(O)c1cc(C2CCCN2c2cc(F)cc(F)c2)c2oc(N3CCOCC3)cc(=O)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.