You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [(8S,9S,12S,13R,14S,16R)-13,21-dihydroxy-8,14-dimethoxy-4,10,12,16-tetramethyl-3-oxo-2-azabicyclo[16.3.1]docosa-1(21),4,6,10,18(22),19-hexaen-9-yl] carbamate by IUPAC nomenclature, provide its molecular formula.
user
C28H40N2O7
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