Using [N-]=[N+]=NC(Cc1ccccc1)C(=O)O, NCc1ccccc1 to produce [N-]=[N+]=NC(Cc1ccccc1)C(=O)NCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.