Using O=S(Cl)Cl, O=C(OCc1ccccc1)N1CCN(c2cc(COC3CCCCO3)ccn2)CC1 to produce O=C(OCc1ccccc1)N1CCN(c2cc(CCl)ccn2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.