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system
Provide the molecular formula for the IUPAC named substance [[[(2R,5R)-5-[3-(1,2-benzoxazol-3-ylmethyl)-2,4-dioxopyrimidin-1-yl]-3,4-dihydroxy-2,5-dihydrofuran-2-yl]methoxy-hydroxyphosphoryl]-difluoromethyl]phosphonic acid .
user
C18H17F2N3O12P2
assistant