InChI=1S/C9H17NO7/c1-4(8(14)15)10-3-9(16)7(13)6(12)5(2-11)17-9/h4-7,10-13,16H,2-3H2,1H3,(H,14,15)/t4-,5+,6+,7-,9?/m0/s1