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What is the molecular formula of the molecule 8'-[6-(difluoromethoxy)pyridazin-3-yl]-5'-(3,5-difluorophenoxy)-5,6-dihydroxy-2'-methylspiro[1,3-dioxepane-2,1'-4,5-dihydro-3H-2-benzazepine]-4,7-dione ?
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C26H21F4N3O8
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