InChI=1S/C40H38N4O8/c1-51-33-19-23(3-9-29(33)45)5-13-35(49)41-17-15-25-21-43-27-7-11-31(47)39(37(25)27)40-32(48)12-8-28-38(40)26(22-44-28)16-18-42-36(50)14-6-24-4-10-30(46)34(20-24)52-2/h3-14,19-22,43-48H,15-18H2,1-2H3,(H,41,49)(H,42,50)/b13-5+,14-6+