Showing structure for CO/N=C(\C(=O)N([C@@H]1C(=O)N2C(C(=O)O)=C(COC(=O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C)CS[C@H]12)[Si](C)(C)C(C)(C)C)C1=CC=CO1