Using O=[O+][O-], C=CCC(C(=O)OC)c1ccc(OCc2ccccc2)cc1 to produce COC(=O)C(CC=O)c1ccc(OCc2ccccc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.