Using CCOC(=O)C[C@@H](NC(=O)OC(C)(C)C)C(=O)Nc1cccnc1 to produce CCOC(=O)C[C@@H](NC(=O)OC(C)(C)C)C(=O)NC1CCCNC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.