Using CN1CCC(OC2c3ccccc3CCn3c2nc(I)c3C#N)CC1, O=S([O-])([O-])=S to produce CN1CCC(OC2c3ccccc3CCn3c2nc(I)c3C(N)=O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.