2-(3-{5-[5-(Azetidine-1-carbonyl)-pyridin-2-ylamino]-1-methyl-6-oxo-1,6-dihydro-pyridazin-3-yl}-2-hydroxymethyl-phenyl)-6-tert-butyl-8-fluoro-2H-phthalazin-1-one (HCID 56656126)|Huagongshe