Using CCc1cc2c(O)cccc2n1Cc1ccccc1, CC(C)(C)OC(=O)CBr to produce CCc1cc2c(OCC(=O)OC(C)(C)C)cccc2n1Cc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.