1-(3-methyl-10,11,2,13-tetrahydropyrido[3,2-α:2',3'-c]phenzine)-1,4,7,10-tetraazacyclododecane

7-methyl-10,11,12,13-tetrahydrodipyrido[3,2a:2',3'-c]phenazine

1-(7'-methyldipyrido[3,2-f:2',3'-h]quinoxaline)-1,4,7,10-tetraazacyclododecane

dipyrido[3,2-f:2',3'-h]quinoxaline-7-carboxyaldehyde

7-(hydroxymethyl)dipyrido[3,2-f:2',3'-h]quinoxaline