has role hydroxy polyunsaturated fatty acid antifungal agent leptomycin B LMB chebi_ontology Antibiotic CI 940 antibiotic ATS 1287B CHEBI:52646 A leptomycin having a (2<i>E</i>,10<i>E</i>,12<i>E</i>,16<i>Z</i>,18<i>E</i>)-double bond configuration as well as an ethyl substituent at position 17. ATS 1287B Antibiotic CL 1957A Antibiotic PD 114720 leptomycin bacterial metabolite