You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[(E)-3-[(3aR,6aR)-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-2-yl]-3-oxoprop-1-enyl]benzoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H19NO3
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