Supplemental material, Online Supplementary file 1, for New Metabolites From the Endophytic Fungus Cercophora samala Associated With Mitragyna inermis by Erik Donfack Vouffo, Clovis Douanla-Meli, Angelbert Fusi Awantu, Bruno Ndjakou Lenta, Sylvère Ngouela, Etienne Tsamo and Hartmut Laatsch in Natural Product Communications