Showing structure for C[Si](C)(C)NC1=NC2=C(NC(CN(C3=CC=C(C(=O)NC(CCC(=O)NC(CCC(=O)NC(CCC(=O)[O-])C(=O)[O-])C(=O)[O-])C(=O)[O-])C=C3)[Si](C)(C)C)CN2)C(=O)[NH]1