Synonyms: (+)-27-Deoxywithaferin A;(22R)-5,6β-Epoxy-4β,22-dihydroxy-1-oxo-5β-ergosta-2,24-dien-26-oic acid δ-lactone;(22R)-5β,6β-Epoxy-4β,22-dihydroxy-1-oxoergosta-2,24-dien-26-oic acid 26,22-lactone;[22R,(+)]-5β,6β-Epoxy-4β,22-dihydroxy-1-oxo-5β-ergosta-2,24-dien-26-oic acid δ-lactone;20-Deoxywithanolide D;27-Deoxywithaferin A