You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule [(1S,2S,5S,8R,9R,11R,18R)-9-hydroxy-12,12-dimethyl-6-methylidene-7-oxo-17-oxapentacyclo[7.6.2.15,8.01,11.02,8]octadecan-18-yl] (E)-3-(2-fluoropyridin-4-yl)prop-2-enoate into molecular formula.
user
C28H32FNO5
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