Using CC(C)(C)OC(=O)NC1CCNc2ccccc21, CCOC(=O)Cl to produce CCOC(=O)N1CCC(NC(=O)OC(C)(C)C)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.