Mass spectrometric analysis were made while working as a guest scientist at the Institute of Chemistry 2, KFA J/Jlich (Drs. K. Wagener, Director, and H. Foerstel, head of the 180 working group) Add under acknowledgements: The authors gratefully acknowledge logistic and financial support by the KFA Jfilich.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.