5,6-bis(4-ethylphenyl)-4,7-bis(4-hexylphenyl)azepino[3,2,1-hi]indole-1,2-dione
5,7-bis(4-ethylphenyl)-4,6-bis(4-hexylphenyl)azepino[3,2,1-hi]indole-1,2-dione
1,3-bis(4-ethylphenyl)-2,3-bis(4-hexylphenyl)cyclopenta[b]chromen-9(3H)-one
2,3-bis(4-ethylphenyl)-1,3-bis(4-hexylphenyl)cyclopenta[b]chromen-9(3H)-one