Showing structure for COC1=CC=C(CC(NC(=O)CC(C)(C)N)C(=O)N(C(CC2=CN=CN2[Si](C)(C)C)C(=O)N(C(CC2CCCCC2)C(O)C(O)CC(C)C)[Si](C)(C)C)[Si](C)(C)C)C=C1