1,3-diphenyl-1H-[1]benzothieno[2,3-c]pyran 1H-[1]benzothieno[2,3-c]pyran, 1,3-diphenyl- InChI=1/C23H16OS/c1-3-9-16(10-4-1)20-15-19-18-13-7-8-14-21(18)25-23(19)22(24-20)17-11-5-2-6-12-17/h1-15,22