Using Cc1c2ccc(Nc3ccnc(Cl)n3)cc2nn1C, O=C([O-])[O-] to produce Cc1c2ccc(N(C)c3ccnc(Cl)n3)cc2nn1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.