1 2Q9 2,7,7-trimethyl-9-[1-oxo-8-(propan-2-ylamino)-1,2,3,4-tetrahydroisoquinolin-6-yl]-1,2,3,4,6,7,8,9-octahydro-5h-beta-carbolin-5-one 1.000 2 FGH 2,7,7-trimethyl-9-[8-(2-methylpropyl)-1-oxo-1,2,3,4-tetrahydroisoquinolin-6-yl]-1,2,3,4,6,7,8,9-octahydro-5h-beta-carbolin-5-one 0.778