Using C1COCCO1, COc1cccc(CNc2n[nH]c3ncn(-c4cccc(Cl)c4)c(=N)c23)c1 to produce COc1cccc(CNc2n[nH]c3ncnc(Nc4cccc(Cl)c4)c23)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.