Using COc1cc(Oc2cccc(-c3ccccc3)c2C(=O)OCc2ccccc2)nc(OC)n1 to produce COc1cc(Oc2cccc(-c3ccccc3)c2C(=O)O)nc(OC)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.