Using CCOC(=O)CS, COc1ccc(Cn2nc(Br)c(C=O)c2Br)cc1 to produce CCOC(=O)c1cc2c(Br)nn(Cc3ccc(OC)cc3)c2s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.