Using O=C(O)c1cnccc1Nc1nc(-c2cc(Cl)ccc2F)nc2c1CCCC2, NC1CC1 to produce O=C(NC1CC1)c1cnccc1Nc1nc(-c2cc(Cl)ccc2F)nc2c1CCCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.