InChI=1S/C16H19NO9/c1-16(3-2-6-7(13(21)22)4-17-5-8(6)16)26-15-11(20)9(18)10(19)12(25-15)14(23)24/h4-5,9-12,15,18-20H,2-3H2,1H3,(H,21,22)(H,23,24)