Showing structure for C[Si](C)(C)NC1=NC(=S)C2=C(N([C@@H]3O[C@H](COP(=O)(O[Si](C)(C)C)O[Si](C)(C)C)[C@@H](O[Si](C)(C)C)[C@H]3O[Si](C)(C)C)C=N2)N1[Si](C)(C)C