You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-2-[(5-cyclopropyl-1,3,4-oxadiazol-2-yl)sulfanyl]-N-[(3S)-1,1-dioxothiolan-3-yl]propanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C12H17N3O4S2
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