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<2R,3S,4R,5S,1(R*),2(S*)>-4-(4-bromobenzyloxy)-1-methyl-3-<7-<5-<7-(2,4-dinitrophenylamino)-2-methoxy-1,3-dimethyl-3(E),5(E)-heptadienyl>-3,4-bis(acetyloxy)tetrahydrofuran-2-yl>-2-methyl-1-oxo-2-methyl-2(E),4(E),6(E)-heptatrienyl>-2(1H)-pyridinone