InChI=1S/C12H19NO6/c1-4-6(3)7(11(15)16)13-10(14)8-9(19-8)12(17)18-5-2/h6-9H,4-5H2,1-3H3,(H,13,14)(H,15,16)/t6-,7-,8-,9-/m0/s1