You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 6-(cyclopentanecarbonyl)-2-[(2S)-1-(2-methylpropanoyl)piperidin-2-yl]-3,5,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-one ?
user
C22H32N4O3
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