Showing structure for C[Si](C)(C)OP(=O)([O-])OP(=O)([O-])OC1C(COP(=O)([O-])OP(=O)([O-])OP(=O)([O-])[O-])OC(N2C=NC3=C2N=C(N([Si](C)(C)C)[Si](C)(C)C)[NH]C3=O)C1O