27206-30-0 3-(8$l^{4}-selena-7,9-diazabicyclo[4.3.0]nona-2,4,7,8,10-pentaen-3-yl) -8$l^{4}-selena-7,9-diazabicyclo[4.3.0]nona-2,4,7,8,10-pentaene 38627-20-2 1,4,10,13-Tetraazacyclooctadeca-5,8,14,17-tetraene-7,16-dione,5,9,14,18-tetramethyl- 141538-32-1 1,3,5,2,4,6-Triazatriphosphorine,2,2,4,4,6,6-hexahydro-2-(4-methylphenoxy)-2,4,4,6,6-pentaphenoxy-