(3S)-tert-butyl 4-(6-aminopyridin-3-yl)-3-methylpiperazine-1-carboxylate

(S)-6-tert-butyl-8-fluoro-2-(3-(hydroxymethyl)-4-(5-(5-(2-methyl-4-(oxetan-3-yl)piperazin-1-yl)pyridin-2-ylamino)-6-oxo-1,6-dihydropyridin-3-yl)pyridin-2-yl) phthalazin-1(2H)-one