Showing structure for C[Si](C)(C)OP(=O)(O)O[P@@](=O)(O[Si](C)(C)C)O[P@@](=O)(O)O[P@](=O)(O[Si](C)(C)C)O[P@@](=O)(O)OC[C@H]1O[C@@H](N2C=NC3=C(N)N=CN=C32)[C@H](O)[C@@H]1O