You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 3-methyl-2-[5-[4-[[6-(4-methylpiperazin-1-yl)pyridine-3-carbonyl]amino]phenyl]-3-oxo-1H-isoindol-2-yl]butanoic acid into molecular formula.
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C30H33N5O4
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