Using CI, CCOC(=O)c1cc2c([nH]1)CN(C(=O)OC(C)(C)C)CC2 to produce CCOC(=O)c1cc2c(n1C)CN(C(=O)OC(C)(C)C)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.