Using CCOC(=O)Nc1cccc2c3c([nH]c12)CCN(C(=O)OCC)C3 to produce CCOC(=O)Nc1cccc2c1NC1CCN(C(=O)OCC)CC21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.