Suggested Reaction 2.1.1.-

Left

9-Hydroxy-3,5,7,11,13,15,17-octaoxo-octadecanoyl-[acp]
+S-Adenosyl-L-methionine

Right

9-Hydroxy-3,5,7,11,13,15,17-octaoxo-nonadecanoyl-[acp]
+S-Adenosyl-L-homocysteine
+H+

[BiSSCat | GREP ]