Using O=C1CCCc2c(O)cc(Br)cc21, CC(C)(C)OC(=O)CBr to produce CC(C)(C)OC(=O)COc1cc(Br)cc2c1CCCC2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.