InChI=1/C28H22O4/c29-22-11-14-24-21(16-22)17-25(19-9-10-19)27(20-4-2-1-3-5-20)28(24)32-23-12-6-18(7-13-23)8-15-26(30)31/h1-8,11-17,19,29H,9-10H2,(H,30,31)/p-1/b15-8+/fC28H21O4/q-1 C4950FD74D128163