Using Nc1ncnc2[nH]nc(-c3ccc4ccccc4c3)c12, BrCc1ccccc1 to produce Nc1ncnc2c1c(-c1ccc3ccccc3c1)nn2Cc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.