IUPAC:(3'S,4S,6R)-7-hydroxy-3',6,7,14-tetramethyl-2,9-dioxa-14-azaspiro[bicyclo[9.5.1]heptadecane-4,2'-oxiran]-11-ene-3,8,17-trione
IUPAC:(3'S,4S,6R)-7-hydroxy-3',6,7,14-tetramethyl-2,9-dioxa-14-azaspiro[bicyclo[9.5.1]heptadecane-4,2'-oxiran]-11-ene-3,8,17-trione