InChI=1S/C16H21N5O9/c17-13-8-14(19-3-18-13)21(4-20-8)7-1-5(22)6(29-7)2-28-16-11(25)9(23)10(24)12(30-16)15(26)27/h3-7,9-12,16,22-25H,1-2H2,(H,26,27)(H2,17,18,19)