InChI=1S/C27H30N8O4/c1-17-20-10-4-5-11-21(20)30-22(28-17)16-35-25(38)23-24(32(3)27(35)39)31-26(34(23)13-6-7-14-36)33-12-8-9-19(15-33)29-18(2)37/h4-5,10-11,19,36H,8-9,12-16H2,1-3H3,(H,29,37)/t19-/m1/s1