Using COC(=O)c1c(Cl)cc(Cl)cc1NC(=O)CSCCCc1cncnc1 to produce O=c1[nH]c2cc(Cl)cc(Cl)c2c(O)c1SCCCc1cncnc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.