Using O=C(O)C1CC(O)CN1C(=O)c1ccc2c(c1)OCO2, CCN(CC)CC to produce NC(=O)C1CC(O)CN1C(=O)c1ccc2c(c1)OCO2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.