InChI=1S/C16H25NO6/c1-17(2,3)12-13(11-15(20)21)23-16(22)10-8-6-4-5-7-9-14(18)19/h4-5,7,9,13H,6,8,10-12H2,1-3H3,(H-,18,19,20,21)