Using O=N[O-], Nc1nc2ncn(Cc3ccc(Cl)cc3)c2c(=O)[nH]1 to produce O=c1[nH]c(=O)c2c(ncn2Cc2ccc(Cl)cc2)[nH]1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.