1,6-dioxa-2-azaspiro[4.6]undeca-2,7,9-triene-3-carboxamide, 8,10-dibromo-N-[3-[2,6-dibromo-4-[1-hydroxy-2-(methylamino)ethyl]phenoxy]propyl]-4-hydroxy-9-methoxy- 8,10-dibromo-N-(3-{2,6-dibromo-4-[1-hydroxy-2-(methylamino)ethyl]phenoxy}propyl)-4-hydroxy-9-methoxy-1,6-dioxa-2-azaspiro[4.6]undeca-2,7,9-triene-3-carboxamide InChI=1/C22H25Br4N3O7/c1-27-9-16(30)11-6-12(23)19(13(24)7-11)34-5-3-4-28-21(32)17-20(31)22(36-29-17)8-14(25)18(33-2)15(26)10-35-22/h6-7,10,16,20,27,30-31H,3-5,8-9H2,1-2H3,(H,28,32