Synonyms: MycinolideI, 12,13-deepoxy-12,13-didehydro-21-deoxy-; (+)-Protomycinolide IV; AntibioticA 11725N1; Oxacyclohexadeca-3,11,13-triene-2,10-dione,16-ethyl-6-hydroxy-5,7,9,15-tetramethyl-,[5S-(3E,5R*,6R*,7R*,9S*,11E,13E,15R*,16S*)]-; Protomycinolide IV