Showing structure for C[Si](C)(C)OCC(O[Si](C)(C)C)C1=C(O[Si](C)(C)C)C(OC2OC(CO[Si](C)(C)C)C(O[Si](C)(C)C)C(O[Si](C)(C)C)C2O[Si](C)(C)C)C(=O)O1