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system
Provide the molecular formula for the IUPAC named substance 1-[(2S,3R)-1-(3,5-difluorophenyl)-4-[(3-ethynylphenyl)methylamino]-3-hydroxybutan-2-yl]-5-ethynyl-1-N,1-N-dipropylcyclohexa-3,5-diene-1,3-dicarboxamide .
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