Using ClC(Cl)(Cl)C(Cl)(Cl)Cl, Cc1cc(O)nc(SCc2cncn2C(C)C)n1 to produce Cc1cc(O)nc(SCc2cnc(Cl)n2C(C)C)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.