10H-phenothiazine, 3-bromo-10-phenyl- 3-bromo-10-phenyl-10H-phenothiazine InChI=1/C18H12BrNS/c19-13-10-11-16-18(12-13)21-17-9-5-4-8-15(17)20(16)14-6-2-1-3-7-14/h1-12