Using CC(C)S(=O)(=O)n1c(N)nc2ccc(C(O)(CC(=O)OC(C)(C)C)c3ccccc3)cc21 to produce CC(C)S(=O)(=O)n1c(N)nc2ccc(C(=CC(=O)O)c3ccccc3)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.