4-hydroxy-7-[(1R)-1-hydroxy-2-[(2-methyl-1-phenylpropan-2-yl)amino]ethyl]-3H-1,3-benzothiazol-2-one
7-[(1R)-2-[(1,1-dimethyl-2-phenyl-ethyl)amino]-1-hydroxy-ethyl]-4-hydroxy-3H-1,3-benzothiazol-2-one
7-[(1R)-2-[(1,1-dimethyl-2-phenylethyl)amino]-1-hydroxyethyl]-4-hydroxy-3H-1,3-benzothiazol-2-one
4-hydroxy-7-[(1R)-1-hydroxy-2-[(2-methyl-1-phenyl-propan-2-yl)amino]ethyl]-3H-1,3-benzothiazol-2-one