InChI=1S/C16H27NO5/c1-11(21-4)16(20,15(2,3)19)14(18)22-10-12-7-9-17-8-5-6-13(12)17/h7,11,13,19-20H,5-6,8-10H2,1-4H3/t11-,13+,16+/m1/s1