Our best-fit VULCAN chemical profiles. We highlight the 1σ retrieved planetary temperature and abundances from our final retrieval model with POSEIDON (M2.5; see Table 6) for our best-constrained species (H₂O, CH₄, and NH₃) and show the abundances for these species as solid lines. For ease of comparison against forward model expectations from VULCAN, we also highlight the abundance profiles of C₂H₄ and HCN as solid lines. These species were part of follow-up retrieval tests that yielded tentative volume mixing ratios (VMRs) of ﹩\mathrm{log}{{\rm{C}}}_{2}{{\rm{H}}}_{4}=-6.2{0}_{-2.09}^{+0.49}﹩ and ﹩\mathrm{log}{\rm{HCN}}=-5.7{1}_{-0.39}^{+0.34}﹩ (see Section 6.2).