methyl (5R,7S,10S)-10-tert-butyl-15,15-dimethyl-3,9,12-trioxo-6,7,9,10,11,12,14,15,16,17,18,19-dodecahydro-1H,5H-2,23:5,8-dimethano-4,13,2,8,11-benzodioxatriazacyclohenicosine-7(3H)-carboxylate
metil (5R,7S,10S)-10-terz-butil-15,15-dimetil-3,9,12-triosso-6,7,9,10,11,12,14,15,16,17,18,19-dodecaidro-1H,5H-2,23:5,8-dimetano-4,13,2,8,11-benzodiossatriazacicloenicosina-7(3H)-carbossilato