You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (3aS,6aR)-5-tert-butyl-2-methyl-3a,4,6,6a-tetrahydro-3H-pyrrolo[2,3-c]pyrrole into its molecular formula.
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C11H20N2
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