Using COC(=O)c1cccc(CN2CCNCC2)c1, O=C(O)c1ccc([N+](=O)[O-])cc1 to produce COC(=O)c1cccc(CN2CCN(C(=O)c3ccc([N+](=O)[O-])cc3)CC2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.