[(3-pyridylmethyl)Cr(1,4,8,12-tetraazacyclopentadecane)(H2O)](2+)

1,4,8,12-tetrakis(p-tolylsulphonyl)-1,4,8,12-tetra-azacyclopentadecane

N,N',N'',N'''-tetratosyl-1,10-diamino-4,7-diazadecane

1,4,8,12-tetrakis((trifluoromethyl)sulfonyl)-1,4,8,12-tetraazacyclopentadecane