Using CSC1=NCCN1, O=[N+]([O-])c1ccc2c(c1)CNCC2 to produce O=[N+]([O-])c1ccc2c(c1)CN(C1=NCCN1)CC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.