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Name the molecular formula for the molecule established as (9S)-5-[(2E,4E)-4-chloro-5-(methylideneamino)penta-2,4-dien-2-yl]-N-pyrazin-2-yl-1,6,8-triazatricyclo[7.2.1.02,7]dodeca-2(7),3,5-triene-8-carboxamide using the IUPAC nomenclature.
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C20H20ClN7O
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