Using CCOC(=O)c1c(O)c(OCc2ccccc2)c(C(=O)OCC)n1-c1ccc(OC)cc1, CC(C)(C)OC(=O)CBr to produce CCOC(=O)c1c(OCC(=O)OC(C)(C)C)c(OCc2ccccc2)c(C(=O)OCC)n1-c1ccc(OC)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.