7-oxo-4,5,6,7-tetrahydro-benzo[b]thiophene-3-sulfonyl chloride 、
2-amino-1-(2,4-difluorophenyl)-ethanol hydrochloride 以the title compound (290 mg) was obtained as a colorless solid, in the same way as Preparation Example 41的产率得到7-oxo-4,5,6,7-tetrahydro-benzo[b]thiophene-3-sulfonic acid [2-(2,4-difluorophenyl)-2-hydroxy-ethyl]-amide