1-Piperidinyloxy, 4-((7-chloro-2-methoxybenzo(b)-1,5-naphthyridin-10-yl)amino)-2,2,6,6-tetramethyl- 4-((7-Chloro-2-methoxybenzo(b)-1,5-naphthyridin-10-yl)amino)-2,2,6,6-tetramethyl-1-piperidinyloxy 59668-68-7