Using COc1c(C)c(C)c2c(c1C)C(C(=O)O)C(C)(C)O2 to produce Cc1c(C)c2c(c(C)c1O)C(C(=O)O)C(C)(C)O2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.