Using O=C1OC2(c3ccc(Cl)cc31)c1nc(N3CCOCC3)sc1C(=O)NCC2I to produce O=C1OC2(CCNC(=O)c3sc(N4CCOCC4)nc32)c2ccc(Cl)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.