Using O=C1c2cccc([N+](=O)[O-])c2C(=O)N1CCCn1ccnc1 to produce Nc1cccc2c1C(=O)N(CCCn1ccnc1)C2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.