Structure of hexamethylenetetramine (IMAGE) Hokkaido University Caption The symmetric chemical structure of hexamethylenetetramine (HMT, left) and its electrostatic potential (right). (Yasuhiro Oba, et al. Nature Communications. December 7, 2020). Credit Yasuhiro Oba, et al. Nature Communications. December 7, 2020 Usage Restrictions This image is copyrighted, but may be used to report this press release if credited as instructed. 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.