You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [(9R,10R,16R,18R)-7-acetyl-5-methyl-19-oxospiro[7-azahexacyclo[7.6.2.210,13.01,8.05,16.010,15]nonadec-11-ene-18,2'-oxirane]-2-yl] acetate by IUPAC nomenclature, provide its molecular formula.
user
C24H29NO5
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