Using O=C1NC(=O)c2ccccc21, Cc1nc(-c2ccc(CBr)c([N+](=O)[O-])c2)no1 to produce Cc1nc(-c2ccc(CN3C(=O)c4ccccc4C3=O)c([N+](=O)[O-])c2)no1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.