. 2012 Oct 1;17(10):11712–11720. doi: 10.3390/molecules171011712
© 2012 by the authors; licensee MDPI, Basel, Switzerland.
This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
Scheme 2.
Proposed fragmentation of metabolite M2.