2,8,12-Trihydroxy-12-isopropenyl-7-methyl-11H-spiro[4,10-dioxatetracyclo[7.2.1.0~2,7~.0~3,5~]dodecane-6,2′-oxiran]-11-one

2,8,12-Trihydroxy-12-isopropenyl-7-methyl-11H-spiro[4,10-dioxatetracyclo[7.2.1.0~2,7~.0~3,5~]dodecane-6,2′-oxiran]-11-one

Hyenanchin

Hyenancine

Mellitoxine

Spiro(2,5-methano-7H-oxireno(3,4)cyclopent(1,2-d)oxepin-7,2′-oxiran)-3(2H)-one, hexahydro-1b,6,8-trihydroxy-6a-methyl-8-(1-methylethenyl)-, (1aS-(1aalpha,1bbeta,2beta,5beta,6alpha,6abeta,7beta,7aalpha,8R*))-