You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[1-hydroxy-3-(4-phenylphenyl)propyl]-4-(7-oxo-6,7a-dihydro-1H-isoindol-2-yl)hexanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C29H33NO4
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