Using [I-], CCN(CC)C(=O)Cc1c(-c2ccc(O)cc2)nn2c(C)cc(C)nc12 to produce CCN(CC)C(=O)Cc1c(-c2ccc(O)c(I)c2)nn2c(C)cc(C)nc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.