139778-01-1 1,2,4,7-Tetrasilacyclooct-5-yne, 1,1,2,2,4,4,7,7-octamethyl- 636565-71-4 4,8,12,16,20,24-Hexaazanonacosanoic acid,27-amino-14-fluoro-7,15,23,28-tetramethyl-11-(1-methylethyl)-3,19-bis(2-methylpropyl)-5,9,13,17,21,25-hexaoxo-,(3S,7S,11R,14S,15S,19S,23S,27R)-, mono(trifluoroacetate)