Using Cn1c(C2CNC2)nc2cc(C#Cc3ccccn3)ccc2c1=O, N#CCBr to produce Cn1c(C2CN(CC#N)C2)nc2cc(C#Cc3ccccn3)ccc2c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.