You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-(4-fluorophenyl)-2-[2-(5,10,12-trioxo-11-phenyl-2,6-dithia-4,11-diazatricyclo[7.3.0.03,7]dodec-3(7)-en-8-yl)phenoxy]acetamide by IUPAC nomenclature, provide its molecular formula.
user
C28H20FN3O5S2
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