Using O=Cc1c(Cl)ccc([N+](=O)[O-])c1Cl, N=C(N)NN to produce N=C(N)NN=Cc1c(Cl)ccc([N+](=O)[O-])c1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.