Cluster Map (IMAGE) University of California - San Diego Caption The SMART cluster map based on training results of 2,054 HSQC spectra over 83,000 iterations, with inset boxes representing different compound classes. Credit Chen Zhang, Bill Gerwick Usage Restrictions None License Licensed content 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.