90293-54-2 6,11-Dioxa-3-thia-2,4,7,10-tetraazadodeca-7,9-dienoicacid, 8-[(dimethylamino)carbonyl]-2,4,9-trimethyl-5-oxo-,2,3-dihydro-2,2-dimethyl-7-benzofuranyl ester 86683-20-7 [(4E,6E,10E)-14,20,22-trihydroxy-13,17-dimethoxy-4,8,10,12,16-pentamet hyl-3-oxo-2-azabicyclo[16.3.1]docosa-4,6,10,19,21,23-hexaen-9-yl] carb amate