(1S,8R,9R,13R)-11,11-dimethyl-6,10,12,14-tetraoxa-3,5-diazatetracyclo(6.5.1.09,13.01,5)tetradodecane-2,4-dione

(5R,7R,8R,9R)-7-((benzoyloxy)methyl)-2,4-dioxo-6-oxa-1,3-diazaspiro[4.4]nonane-8,9-diyl dibenzoate

(1R,2R,6R,7R)-7-Hydroxymethyl-4,4-dimethyl-3,5,9,11-tetraoxa-8-aza-tricyclo[5.3.1.02,6]undecane-8-carboxylic acid 4-methoxy-benzylamide

(3aR,4R,10aS,10bR)-9-(4-methoxybenzyl)-2,2-dimethyltetrahydro-8H-4,10a-epoxy[1,3]dioxolo[4,5-d]imidazo[1,5-b][1,2]oxazepine-8,10(9H)-dione