Using CCCCOC(=O)c1cc(C)n2cc(C3(C)CC3)nc2c1, O=C1CCC(=O)N1I to produce CCCCOC(=O)c1cc(C)n2c(I)c(C3(C)CC3)nc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.