InChI=1S/C14H19NO6/c16-9-10(17)12(14(19)20)21-13(11(9)18)15-7-6-8-4-2-1-3-5-8/h1-5,9-13,15-18H,6-7H2,(H,19,20)/t9-,10-,11+,12-,13+/m0/s1