Using CCOC(=O)c1cc(O)c2ccc(C)cc2n1, CC(C)(C)OC(=O)CBr to produce CCOC(=O)c1cc(OCC(=O)OC(C)(C)C)c2ccc(C)cc2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.