(2Z,10Z,20Z,28Z)-2,11,20,29,37,39-hexaza-38,40-diazanidanonacyclo[28.6.1.13,10.112,19.121,28.04,9.013,18.022,27.031,36]tetraconta-2,4,6,8,10,13,15,17,20,22,24,26,28,31,33,35-hexadecaene-6,7-dicarboxylate;2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethyl N-[2-[3-[hydroxy(dimethyl)silyl]propylcarbamoylamino]ethyl]carbamate;silicon(4+)