(3S,4R)-3,4-dihydro-3-hydroxy-2,2-dimethyl-4-(2-oxo-1piperidinyl)-N-phenyl-2H-1-benzopyran-6-sulfonamide
(3s,4r)-3,4-dihydro-3-hydroxy-2,2-dimethyl-4-(2-oxo-1piperidinyl)-n-phenyl-2h-1-benzopyran-6-sulfonamide