InChI=1S/C30H30N4O4/c1-15-9-20-12-25-17(3)21(5-7-29(35)36)27(33-25)14-28-22(6-8-30(37)38)18(4)26(34-28)13-24-16(2)10-19(32-24)11-23(15)31-20/h9-14,31,34H,5-8H2,1-4H3,(H,35,36)(H,37,38)/b19-11-,20-12-,23-11-,24-13-,25-12-,26-13-,27-14-,28-14-