1.3.1.B14 (2E,4E,6E,10Z)-4-methyl-11-[2-[(1R,2S)-2-methylcyclopropyl]-4,5-dihydro-1,3-thiazol-4-yl]undeca-2,4,6,10-tetraenoyl-[acyl-carrier-protein] + NADPH + H+ = (2E,4E,6E,10Z)-4-methyl-11-[2-[(1R,2S)-2-methylcyclopropyl]-4,5-dihydro-1,3-thiazol-4-yl]undeca-4,6,10-trienoyl-[acyl-carrier-protein] + NADP+ - -