You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl (3aR,6aS)-2-benzyl-3a-(hydroxymethyl)-3,4,6,6a-tetrahydro-1H-pyrrolo[3,4-c]pyrrole-5-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H28N2O3
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