2-phenyl-1H-indeno[1,2-b]pyrrol-4-one

3-phenylindeno[1,2-c]pyridazin-5-one

4-phenyl-2,5-dihydro-1H-indeno[1,2-d][1,3]diazepin-6-one

2-[bis(methylsulfanyl)methylidene]indene-1,3-dione

indan-1,2-dione