Showing structure for CC(C)(C)[Si](C)(C)OC1=NC(O)=C2N=CN([C@@H]3O[C@H](COP(=O)(O)OP(=O)(O)OP(=O)(O)O)[C@@H](O[Si](C)(C)C(C)(C)C)[C@H]3O[Si](C)(C)C(C)(C)C)C2=N1