InChI=1S/C35H22O15/c36-16-8-6-14(7-9-16)23(33(45)46)30-28(40)25(35(48)50-30)18-12-20(37)29-24-17(18)10-15(11-19(24)34(47)49-29)22(32(43)44)27(39)26(38)21(31(41)42)13-4-2-1-3-5-13/h1-12,22,25,28,36-38,40H,(H,41,42)(H,43,44)(H,45,46)/b26-21-,30-23-