4-((6-Chloro-2H-[1,3]oxazino[5,6-h]quinolin-3(4H)-yl)methyl)phenyl methyl ether 50595-08-9 6-Chloro-3-(4-methoxybenzyl)-3,4-dihydro-2H-[1,3]oxazino[5,6-h]quinoline AIDS-128753 AIDS128753 NSC297363