InChI=1/C26H22O3/c27-20-8-6-18(7-9-20)24-23(29)12-13-26(15-17-4-2-1-3-5-17)16-19-14-21(28)10-11-22(19)25(24)26/h1-11,14,27-28H,12-13,15-16H2/t26-/m1/s1 520DAAC11E1104B9