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system
Provide the molecular formula for the IUPAC named substance 1-[(1R)-1-[(1R,2R,6S,7R)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]ethyl]-3-(5-ethoxy-1,3-benzothiazol-2-yl)urea .
user
C21H22N4O4S
assistant