InChI=1S/C42H40N6O4/c1-7-41(3,4)35-27(23-13-9-11-15-29(23)43-35)21-31-39(51)47-19-17-25(33(47)37(49)45-31)26-18-20-48-34(26)38(50)46-32(40(48)52)22-28-24-14-10-12-16-30(24)44-36(28)42(5,6)8-2/h7-16,21-22,43-44H,1-2,17-20H2,3-6H3,(H,45,49)(H,46,50)/b31-21-,32-22-