Using COc1cc2ncnc(Nc3cccc(Br)c3)c2cc1O, C=CCBr to produce C=CCOc1cc2c(Nc3cccc(Br)c3)ncnc2cc1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.