Using O=C(O)c1ccc([N+](=O)[O-])o1, NCCCn1cncn1 to produce O=C(NCCCn1cncn1)c1ccc([N+](=O)[O-])o1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.