You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-[4-[(7S)-2-[(1-methylpyrrolidin-2-yl)methoxy]-7-[(5-methyl-2-sulfanylphenyl)methyl]-5,6,7,8-tetrahydroquinazolin-4-yl]-1-prop-2-enoylpiperazin-2-yl]acetonitrile into molecular formula.
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C31H40N6O2S
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