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system
Name the molecular formula for the molecule established as (5'S,6'S)-6'-[4-(3-phenylprop-2-ynoxy)-1,2,5-thiadiazol-3-yl]spiro[1,3-dioxolane-2,2'-1-azabicyclo[3.2.1]octane]-4,5-dione using the IUPAC nomenclature.
user
C20H17N3O5S
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