Using COc1cc(C(=O)O)c2c(c1C)OC(=O)c1c(C)cc(O)c(C=O)c1O2 to produce COc1cc(C(=O)O)c2c(c1C)OC(=O)c1c(C)cc(O)c(CO)c1O2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.