Using COc1ccc2c(=O)c(-c3ccc(O)cc3)coc2c1OC, O=C(O)CCl to produce COc1ccc2c(=O)c(-c3ccc(OCC(=O)O)cc3)coc2c1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.