Using CC1(C)CCC(C)(C)C1N, CC(C)(NC(=O)OCc1ccccc1)C(=O)O to produce CC(C)(NC(=O)OCc1ccccc1)C(=O)NC1C(C)(C)CCC1(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.