Using CC(C)CCBr, CCOC(=O)c1cc(=O)c2cc(O)ccc2s1 to produce CCOC(=O)c1cc(=O)c2cc(OCCC(C)C)ccc2s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.