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system
Name the molecular formula for the molecule established as 2-[2-[(1R,8R,9R)-11-(4-bromophenyl)-5,10,12-trioxo-2,6-dithia-4,11-diazatricyclo[7.3.0.03,7]dodec-3(7)-en-8-yl]-4-chlorophenoxy]-N-(4-sulfamoylphenyl)acetamide using the IUPAC nomenclature.
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C28H20BrClN4O7S3
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