InChI=1S/C21H27N3O3/c1-6-20(2,3)13-11-14(21(4,5)19(26)27)18(25)17(12-13)24-22-15-9-7-8-10-16(15)23-24/h7-12,22-23,25H,6H2,1-5H3,(H,26,27)