You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl (2S)-1-[(2S)-1-(2,2-dimethylpropanoyloxy)pyrrolidine-2-carbonyl]-2,3-dihydropyrrole-2-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H30N2O5
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