A macrolide that is the major component of a mixture of four isomeric polyene macrolides isolated from Streptomyces filipinensis. ChEBI: Filipin III is a macrolide that is the major component of a mixture of four isomeric polyene macrolides isolated from Streptomyces filipinensis. It has a role as a bacterial metabolite and a fluorescent probe. It is a macrolide, a polyol and an olefinic compound.