Using COc1ccc2cc(C(=O)CC(c3ccccc3)C(C(=O)O)C(=O)O)ccc2c1 to produce O=C(O)CC(CC(=O)c1ccc2cc(O)ccc2c1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.