8,19-DIOXA-5-AZONIA-3-SILAHENEICOSAN-21-AMINIUM, 3,3-DIETHYL-9,18-DIOXO-N,N,5,5- 8,19-Dioxa-5-azonia-3-silaheneicosan-21-aminium, 3,3-diethyl-9,18-dioxo-N,N,5,5-tetramethyl-N-((triethylsilyl)methyl)-, diiodide 95521-17-8