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 7-(3,4-dihydroxy-5-methylpyrrolidin-2-yl)-2-methyl-3,5-dihydropyrrolo[3,2-d]pyrimidin-4-one ?
user
C12H16N4O3
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