The next category of products includes C 12 to C 17 linear carbon chains, with a notably high concentration of C 16 organics. The conspicuous absence of C 10 to C 13 chains and the apparent upper limit at C 17 products are particularly striking. Interestingly, the C 12 products in this group originate from an unexpected radical dimerization of MS 128.1728, a C 6 compound mentioned earlier (Figure ). Hydrogen abstraction from the aldehyde functionality of this compound by hydroxyl radicals generates the corresponding C 6 radical, which subsequently dimerizes to form the C 12 α,ω-diacid (MS 253.909, Figure ). Similarly, the C 16 product (MS 306) arises from a partially hydrogenated C 8 monomer. In this case, aldehyde hydrogen abstraction by hydroxyl radicals produces a C 8 radical that dimerizes to yield an α,ω-dicarboxylic acid containing an unsaturated diketone functionality. These findings provide valuable insights into the radical-driven pathways that govern the formation of higher-order organic products in this system. A C 14 dimer originating from the C 7 MS 140 monomer could not be found, but a coupling product between a hydrogenated C 6 and C 7 monomer radical was identified yielding the C 13 dicarboxylic acid diketone MS 272, Figure . An unsaturated, partially hydrolyzed C 8 α,ω-hydroxylic acid keto radical, derived from complex 8, undergoes dimerization to form the C 16 unsaturated diacid-diketone-dialcohol (MS 342), as illustrated in Figure .