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system
Provide the molecular formula for the IUPAC named substance tert-butyl 3-[(2S)-1-[[(3aR,4R,6R,6aR)-4-(4-chloropyrrolo[2,3-d]pyrimidin-7-yl)-2,2-dimethyl-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-6-yl]methyl]-4,4-difluoropyrrolidin-2-yl]propanoate .
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C25H33ClF2N4O5
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