Metabolism of a Straight-Chain Phenylated Fatty Acid A crystalline metabolite was isolated from the urine of a rabbit that had been fed a straight-chain fatty acid containing a terminal phenyl group: -CH-(CH)-COO A 302 mg sample of the metabolite in aqueous solution was completely neutralized by 22.2 mL of 0.100 M NaOH. (a) What is the probable molecular weight and structure of the metabolite? (b) Did the straight-chain fatty acid contain an even or an odd number of methylene (-CH-) groups (i.e., is n even or odd)? Explain.