Using OB(O)c1cccnc1, O=C1OC2(CCN(c3nc4cc(I)ccc4[nH]3)CC2)c2ccccc21 to produce O=C1OC2(CCN(c3nc4cc(-c5cccnc5)ccc4[nH]3)CC2)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.