Using CC(C)(C)OC(=O)CSc1ccc(Br)cc1, C=CC(=O)OCC to produce CCOC(=O)C=Cc1ccc(SCC(=O)OC(C)(C)C)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.