Using CC(=O)Nn1cnnc1N(N=Cc1c(Cl)cccc1Cl)C(C)=O, O=C([O-])[O-] to produce CC(=O)N(N=Cc1c(Cl)cccc1Cl)c1nncn1N(C)C(C)=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.