Using O=C(NCCNC(=O)c1ccc([N+](=O)[O-])cc1)c1ccc([N+](=O)[O-])cc1 to produce Nc1ccc(C(=O)NCCNC(=O)c2ccc(N)cc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.