Using CCOC(=O)c1ccc(N)cc1, Brc1cn2ccnc2c(Br)n1 to produce CCOC(=O)c1ccc(Nc2nc(Br)cn3ccnc23)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.