Showing structure for C[Si](C)(C)NC1=NC(=O)C2=C([NH]1)N([Si](C)(C)C)CC([C@H](O[Si](C)(C)C)[C@H](O)COP(=O)(O[Si](C)(C)C)OP(=O)(O[Si](C)(C)C)OP(=O)(O)O)=N2