Compound 6

(Z)-5-(chloromethylene)-3-(2-((2R,3R,5R,6S)-6-((2R,3R,4R,6R)-6-((2S,3S,5S)-5-ethyl-5-((2R,5R,6S)-5-ethyl-5-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)-3-methyltetrahydrofuran-2-yl)-3-hydroxy-4-methyl-5-oxooctan-2-yl)-3,5-dimethyltetrahydro-2H-pyran-2-yl)acetyl)-4-hydroxyfuran-2(5H)-one

From: Expanding the antibacterial selectivity of polyether ionophore antibiotics through diversity-focused semisynthesis