Using CC(C)(C)OC(=O)N1CCN(c2ccc3cn[nH]c3c2)CC1, II to produce CC(C)(C)OC(=O)N1CCN(c2ccc3c(I)n[nH]c3c2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.