heterodetic cyclic peptide azamacrocycle anidulafungin A semisynthetic echinocandin anti-fungal drug. It is active against <em>Aspergillus</em> and <em>Candida</em> species and is used for the treatment of invasive candidiasis. CHEBI:55346 chebi_ontology echinocandin semisynthetic derivative antibiotic antifungal drug