InChI=1S/C16H19NO7/c18-7-11-13(20)14(21)15(22)16(23-11)24-12(19)5-8-6-17-10-4-2-1-3-9(8)10/h1-4,6,11,13-18,20-22H,5,7H2/t11-,13-,14+,15-,16+/m1/s1