You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule tert-butyl (3aR,6aS)-2-[5-fluoro-2-[(1-methylpyrazol-4-yl)amino]pyrimidin-4-yl]-3a,6a-dimethyl-1,3,4,6-tetrahydropyrrolo[3,4-c]pyrrole-5-carboxylate .
user
C21H30FN7O2
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