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 4-(3-chlorophenyl)-1-prop-2-enyl-6-(pyridin-3-ylmethyl)-4,7-dihydro-3H-pyrrolo[3,4-d]pyrimidine-2,5-dione ?
user
C21H19ClN4O2
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