Alnus 2 Cyclohexanones 2 Heterocyclic Compounds, Bridged-Ring 2 Molecular Structure 2 Paecilomyces 2 Paecilomyces marquandii 2 Urea 2 article 2 controlled study 2 drug isolation 2 drug structure 2 fungus 2 gentamicin 2 intertidal species 2 molecular model 2 natural product 2 nonhuman 2 paecilomyces marquandii 2 sorbicillinoid urea 2 sorbicillinol 2 stereochemistry 2 unclassified drug 2