1-[2'-(5-fluoro-2,3-dihydro-indole-1-carbonyl)-5'-(3-hydroxy-prop-1-ynyl)-3,4,5,6-tetrahydro-2H-[1,4']bipyridinyl-4-yl]-1,3-dihydro-imidazo[4,5-b]pyridin-2-one