6H-oxazolo[4,5-e]pyrido[3,4-b]indole-9-carboxylic acid, 10-(methoxymethyl)-2-(1-methylethyl)-5-[(2-methylpropyl)amino]-, 1-methylethyl ester InChI=1/C25H32N4O4/c1-12(2)9-26-16-8-18-23(29-24(33-18)13(3)4)20-19-15(11-31-7)21(25(30)32-14(5)6)27-10-17(19)28-22(16)20/h8,10,12-14,26,28H,9,11H2,1-7H isopropyl 5-(isobutylamino)-2-isopropyl-10-(methoxymethyl)-6H-[1,3]oxazolo[4,5-e]pyrido[3,4-b]indole-9-carboxylate