Using Nc1nc(Cl)c2nc[nH]c2n1, OC[C@@]12COC(c3ccccc3)OC[C@@H]1C2 to produce Nc1nc(Cl)c2ncn(C[C@@]34COC(c5ccccc5)OC[C@@H]3C4)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.