2-[3,8,8,12,12-pentakis(2-hydroxy-2-oxoethyl)-2,7,11-tris(oxidanylidene)-1,4,6,9,10,13-hexaoxa-5$l^{6}-titanaspiro[4.4^{5}.4^{5}]tridecan-3-yl]ethanoic acid

Q3ACS4 — CO-methylating acetyl-CoA synthase