Using O=Cc1cccc(F)c1F, CC(C)(C)OC(=O)NC1CNCCN(CC(F)(F)F)C1=O to produce CC(C)(C)OC(=O)NC1CN(Cc2cccc(F)c2F)CCN(CC(F)(F)F)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.