Using Nc1cccc(Oc2ccc3nccn3n2)c1, O=C(Cl)c1ccccc1 to produce O=C(Nc1cccc(Oc2ccc3nccn3n2)c1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.