Using CC(C)(C)OC(=O)N1CCC(O)CC1, O=C(Nc1cccc2c1C(=O)NC2=O)c1ccc(Cl)s1 to produce CC(C)(C)OC(=O)N1CCC(N2C(=O)c3cccc(NC(=O)c4ccc(Cl)s4)c3C2=O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.