5-[(R)-2-(2-{4-[4-(3-amino-propoxy)-phenylamino]-phenyl}-ethylamino)-1-hydroxy-ethyl]-8-hydroxy-1H-quinolin-2-one

5-[(R)-2-(2-{4-[4-(4-amino-butoxy)-phenylamino]-phenyl}-ethylamino)-1-hydroxy-ethyl]-8-hydroxy-1H-quinolin-2-one

5-{(R)-2-[2-(4-{4-[2-(2-amino-ethoxy)-ethoxy]-phenylamino}-phenyl)-ethylamino]-1-hydroxy-ethyl}-8-hydroxy-1H-quinolin-2-one

tert-butyl (R)-(2-(4-((4-(2-((2-hydroxy-2-(8-hydroxy-2-oxo-1,2-dihydroquinolin-5-yl)ethyl)amino)ethyl)phenyl)amino)phenoxy)ethyl)carbamate

(R)-N-(2-(4-((4-(2-((2-hydroxy-2-(8-hydroxy-2-oxo-1,2-dihydroquinolin-5-yl)ethyl)amino)ethyl)phenyl)amino)phenoxy)ethyl)benzamide