Showing structure for CC(C)(C)[Si](C)(C)OC1=NC(S[Si](C)(C)C(C)(C)C)=C2N=CN([C@@H]3O[C@H](C(O[Si](C)(C)C(C)(C)C)P(=O)(O)O)C(O[Si](C)(C)C(C)(C)C)C3O)C2=N1