has role aminoglycoside antibiotic macrolide antibiotic polyol dicarboxylic acid monoester polyene nystatins A class of polyene antifungal antibiotics produced by <em>Streptomyces noursei</em>, and other <em>Streptomyces</em> species. chebi_ontology CHEBI:59676 bacterial metabolite antibiotic antifungal drug