154447-38-8 2-(4-Piperazinyl)-8-phenyl-4H-1-benzopyran-4-one 4H-1-Benzopyran-4-one, 8-phenyl-2-(1-piperazinyl)- 8-Phenyl-2-(1-piperazinyl)-4H-1-benzopyran-4-one LY 303511 LY-303511