InChI=1S/C18H26N6O6/c1-9(2)15(25)28-8-18(22-23-20)13(29-16(26)10(3)4)11(5)14(30-18)24-7-6-12(19)21-17(24)27/h6-7,9-11,13-14H,8H2,1-5H3,(H2,19,21,27)/t11-,13-,14+,18+/m0/s1