Using O=C(c1ccccc1)c1ccc(CBr)cc1, CCOC(=O)CC(=O)OCC to produce CCOC(=O)C(Cc1ccc(C(=O)c2ccccc2)cc1)C(=O)OCC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.