InChI=1S/C18H31NO3/c1-2-3-4-5-6-7-8-9-10-11-12-13-17(20)19-16-14-15-22-18(16)21/h7-8,16H,2-6,9-15H2,1H3,(H,19,20)/b8-7-/t16-/m0/s1