InChI=1S/C21H30N4O4.C4H6O6/c1-2-29-20-13-18(22)19(25(27)28)12-17(20)21(26)23-16-8-10-24(11-9-16)14-15-6-4-3-5-7-15;5-1(3(7)8)2(6)4(9)10/h3-4,12-13,15-16H,2,5-11,14,22H2,1H3,(H,23,26);1-2,5-6H,(H,7,8)(H,9,10)/t;1-,2-/m.1/s1