You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 5-[(3aS,5R,6R,6aS)-5-hydroxy-6-[(3S)-3-hydroxyhex-1-enyl]-1,3a,4,5,6,6a-hexahydropentalen-2-yl]-N,N-dimethylpentanamide by IUPAC nomenclature, provide its molecular formula.
user
C21H35NO3
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