(S)-tert-butyl 4-(6-((6-chloro-2-methyl-3-oxo-2,3-dihydropyridazin-4-yl)amino)pyridin-3-yl)-3-methylpiperazine-1-carboxylate

6-tert-butyl-8-fluoro-2-[3-(hydroxymethyl)-4-[1-methyl-5-[[5-[(2S)-2-methyl-4-(oxetan-3-yl)piperazin-1-yl]-2-pyridyl]amino]-6-oxo-pyridazin-3-yl]-2-pyridyl]phthalazin-1-one

(S)-(2-(6-tert-butyl-8-fluoro-1-oxophthalazin-2(1H)-yl)-4-(1-methyl-5-(5-(2-methyl-4-(oxetan-3-yl)piperazin-1-yl)pyridin-2-ylamino)-6-oxo-1,6-dihydropyridazin-3-yl)pyridin-3-yl)methyl acetate