Using CC(C)CC(=O)Cl, CC(C)CC(NC(=O)OC(C)(C)C)C(O)CN to produce CC(C)CC(=O)NCC(O)C(CC(C)C)NC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.