Using C=CC(=O)O, Nc1ccc2ncnc(Nc3cccc(Br)c3)c2c1 to produce C=CC(=O)Nc1ccc2ncnc(Nc3cccc(Br)c3)c2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.