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Under IUPAC nomenclature, a molecule named 6,7,19,20-tetrafluoro-3-methyl-23-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]-3,13,23-triazahexacyclo[14.7.0.02,10.04,9.011,15.017,22]tricosa-1,4,6,8,10,15,17,19,21-nonaene-12,14-dione is given. What is its corresponding molecular formula?
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C27H19F4N3O7
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