InChI=1S/C15H15NO8/c17-9-10(18)12(13(20)21)23-15(11(9)19)24-14(22)7-5-16-8-4-2-1-3-6(7)8/h1-5,9-12,15-19H,(H,20,21)/t9-,10-,11+,12?,15-/m0/s1