Using COc1cc(C(O)c2ccc(C)cc2)cc(C2OCCCO2)c1OC to produce COc1cc(C(=O)c2ccc(C)cc2)cc(C(=O)O)c1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.