Using CS(=O)(=O)O[C@@H]1C[C@@H](COCC(=O)O)N(C(=O)OCc2ccccc2)C1, CC1(C)OC(=O)CC(=O)O1 to produce CC1(C)OC(=O)C(C(=O)COC[C@@H]2C[C@@H](OS(C)(=O)=O)CN2C(=O)OCc2ccccc2)C(=O)O1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.