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system
(E)-2-[(6S)-4-[4-[2-fluoro-3-methyl-4-([1,2,4]triazolo[1,5-a]pyridin-7-yloxy)anilino]pyrimido[5,4-d]pyrimidin-6-yl]-6-methyl-3,6-dihydro-2H-pyridine-1-carbonyl]but-2-enenitrile;2-[(6S)-4-[4-[2-fluoro-3-methyl-4-([1,2,4]triazolo[1,5-a]pyridin-7-yloxy)anilino]pyrimido[5,4-d]pyrimidin-6-yl]-6-methyl-3,6-dihydro-2H-pyridine-1-carbonyl]prop-2-enenitrile;1-[(6S)-4-[4-[2-fluoro-3-methyl-4-([1,2,4]triazolo[1,5-a]pyridin-7-yloxy)anilino]pyrimido[5,4-d]pyrimidin-6-yl]-6-methyl-3,6-dihydro-2H-pyridin-1-yl]butan-1-one;(E)-1-[(6S)-4-[4-[2-fluoro-3-methyl-4-([1,2,4]triazolo[1,5-a]pyridin-7-yloxy)anilino]pyrimido[5,4-d]pyrimidin-6-yl]-6-methyl-3,6-dihydro-2H-pyridin-1-yl]-4-methoxybut-2-en-1-one;1-[(6S)-4-[4-[2-fluoro-3-methyl-4-([1,2,4]triazolo[1,5-a]pyridin-7-yloxy)anilino]pyrimido[5,4-d]pyrimidin-6-yl]-6-methyl-3,6-dihydro-2H-pyridin-1-yl]-2-methylprop-2-en-1-one;(E)-1-[4-[4-[2-fluoro-3-methyl-4-([1,2,4]triazolo[1,5-a]pyridin-7-yloxy)anilino]pyrimido[5,4-d]pyrimidin-6-yl]-6-methyl-3,6-dihydro-2H-pyridin-1-yl]pent-2-en-1-one;(E)-1-[(6S)-4-[4-[2-fluoro-3-methyl-4-([1,2,4]triazolo[1,5-a]pyridin-7-yloxy)anilino]pyrimido[5,4-d]pyrimidin-6-yl]-6-methyl-3,6-dihydro-2H-pyridin-1-yl]-4-propoxybut-2-en-1-one;1-[(2R)-2-methyl-4-[4-[3-methyl-4-([1,2,4]triazolo[1,5-a]pyridin-7-yloxy)anilino]pyrido[3,2-d]pyrimidin-6-yl]-3,6-dihydro-2H-pyridin-1-yl]prop-2-en-1-one;1-[(2S)-2-methyl-4-[4-[3-methyl-4-([1,2,4]triazolo[1,5-a]pyridin-7-yloxy)anilino]pyrido[3,2-d]pyrimidin-6-yl]-3,6-dihydro-2H-pyridin-1-yl]prop-2-en-1-one is the IUPAC name of a molecule. Please give its molecular formula.
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C267H242F7N81O20
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