InChI=1S/C22H27NO4/c1-4-25-20-8-7-15(12-22(20)27-6-3)11-18-17-14-21(26-5-2)19(24)13-16(17)9-10-23-18/h7-8,11-14,23-24H,4-6,9-10H2,1-3H3/b18-11-