You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[3,4-difluoro-2-(2-fluoro-4-iodoanilino)phenyl]-[3-hydroxy-3-[(3,3,3-trifluoropropylamino)methyl]azetidin-1-yl]methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H18F6IN3O2
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