You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 3-[4-[3-chloro-1-(difluoromethyl)pyrazol-4-yl]sulfonyl-6-[(1,1,1-trifluoro-2-methylpropan-2-yl)oxycarbonylamino]-2,3-dihydro-1,4-benzoxazin-2-yl]-2-methylpropanoic acid by IUPAC nomenclature, provide its molecular formula.
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C21H22ClF5N4O7S
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