Using O=C(Cl)c1cccnc1, NC1=NN=C(c2ccccc2)C1=NNc1ccccc1 to produce O=C(NC1=NN=C(c2ccccc2)C1=NNc1ccccc1)c1cccnc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.