Using Nc1nonc1-c1nc2ccccc2[nH]1, O=C(CBr)c1ccccc1 to produce Nc1nonc1-c1nc2ccccc2n1CC(=O)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.