Using Cn1c(Nc2nc3ccc(Cl)cc3s2)nc2cc(C(=O)O)ccc21, CC(C)(C)OC(=O)N(CCN)CCF to produce Cn1c(Nc2nc3ccc(Cl)cc3s2)nc2cc(C(=O)NCCN(CCF)C(=O)OC(C)(C)C)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.