(12E,25E)-16,21,32-tribromo-4,17-dihydroxy-2,19-dioxa-10,27-diazapentacyclo[28.2.2.2~20,23~.1~3,7~.1~14,18~]octatriaconta-1(32),3(38),4,6,14(37),15,17,20,22,30,33,35-dodecaene-11,12,25,26-tetrone 12,2 2,19-dioxa-10,27-diazapentacyclo[28.2.2.2~20,23~.1~3,7~.1~14,18~]octatriaconta-3,5,7(38),14,16,18(37),20,22,30,32,33,35-dodecaene-11,12,25,26-tetrone, 16,21,32-tribromo-4,17-dihydroxy-, 12,25-dioxime, Bastadin-21 InChI=1/C34H29Br3N4O8/c35-22-11-18-2-5-28(22)48-30-16-19(1-4-27(30)42)8-10-39-34(45)26(41-47)15-21-13-24(37)32(43)31(17-21)49-29-6-3-20(12-23(29)36)14-25(40-46)33(44)38-9-7-18/h1-6,11-13,16-17,42-43,46-47H,7-10,14-15H2,(H,38,44)(H,39,45)/b40-25+,41-26