Kornfeld ketone

1-Benzoyl-2,2a,3,4-tetrahydrobenz[cd]indol-5(1H)-one

1-Benzoyl-1,2,2a,3-tetrahydrobenzo[cd]indole-5(4H)-one

1-Benzoyl-1,2,2a,3,4,5-hexahydro-1-azaacenaphthylen-5-one