You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (E)-1-[(3R)-4-[1-[(2-methoxyphenyl)methyl]benzimidazole-5-carbonyl]-3-methylpiperazin-1-yl]-4-[methyl(prop-2-ynyl)amino]but-2-en-1-one into molecular formula.
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C29H33N5O3
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