Oxepin
(-)-3-(5-Formyl-2-hydroxyphenyloxy)-4-methoxybenzoic acid (5aS,6S)-1,2,3,4,5a,6-hexahydro-2-methyl-1,4-dioxo-3-thioxooxepino[3,4:4,5]pyrrolo[1,2-a]pyrazine-6-yl ester
(-)-4,5,1a,1b,5,6,6a,7a-Octahydro-1b,5,6-trihydroxy-5,6a-dimethyl-8-(1-methylethenyl)spiro[furan-2(3H),7-[2,5]methano[7H]oxireno[3,4]cyclopent[1,2-d]oxepin]-3(2H)-one
(1'R,5a'S,8R,8a'S,9a'R)-1'-hydroxy-1',4,4,8',8'-pentamethyl-8a',9'-dihydro-1'H,4H,8'H,10'H-spiro[1,4-dioxepino[2,3-g]indole-8,7'-[5a,9a](epiminomethano)cyclopenta[f]indolizine]-3',9,10'(2'H,10H)-trione - ethane (1:1)
(1'R,8R,8a'S)-1'-hydroxy-1',4,4,8',8',11'-hexamethyl-2',3',8a',9'-tetrahydro-1'H,4H,8'H,10'H-spiro[1,4-dioxepino[2,3-g]indole-8,7'-[5a,9a](epiminomethano)cyclopenta[f]indolizine]-9,10'(10H)-dione 4'-oxide
(15z)-15-benzylidene-2,4a,5,5a,7,8,13a,15a,15b,16-decahydro4,6-methanoindolo[3,2,1-ij]oxepino[2,3,4-de]pyrrolo[2,3-h]quinoline-14-one
(1aR,1bS,2R,2'S,5S,6aS,7aS,8R)-rel-1b-(Acetyloxy)hexahydro-8-(1-hydroxy-1-methylethyl)-6a-methylspiro[2,5-methano-7H-oxireno[3,4]cyclopent[1,2-d]oxepin-7,2'-oxiran]-3(2H)-one