Using Cc1nc(C)n(-c2c(C)n[nH]c2OC(C)C(=O)c2ccc(Cl)cc2Cl)n1 to produce Cc1nc(C)n(-c2c(C)nn3c(-c4ccc(Cl)cc4Cl)c(C)oc23)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.