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system
Provide the molecular formula for the IUPAC named substance ethyl 2-[5-[2-[[5-(difluoromethyl)-2,3-dihydro-1H-inden-2-yl]amino]pyrimidin-5-yl]-1,3,4-oxadiazol-2-yl]acetate .
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C20H19F2N5O3
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