Using COc1ccc(S(=O)(=O)N(CC(=O)OC(C)(C)C)c2cc(N(C)C)ccc2Cl)cc1OC to produce COc1ccc(S(=O)(=O)N(CC(=O)O)c2cc(N(C)C)ccc2Cl)cc1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.