Natural Antibiotic (image) Rice University Caption The Rice University lab of synthetic chemist K.C. Nicolaou determined the structure of viridicatumtoxin B, a natural antibiotic, on the way to total synthesis of the compound. Credit Nicolaou Group/Rice University Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.