Using O=C(O)C1=NN=C(c2ccncc2)C1, NCCc1ccc(-c2ccc(Cl)c(Cl)c2)o1 to produce O=C(NCCc1ccc(-c2ccc(Cl)c(Cl)c2)o1)c1cc(-c2ccncc2)n[nH]1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.