Corner plots which shows the sampled distributions for each parameter, as displayed on the x-axis. The 1D distributions on the diagonal are the posterior distributions for each explored parameter, the reset 2D distributions are the joint posterior for corresponding parameter pair on the x- and y- axes. In the 1D distributions, the 1σ regions are shaded with blue; both 1σ and 2σ are shaded in the 2D distributions. On top of each 1D distribution listed the inferred values if the distribution can be properly constrained. Results from CND-R1 and CND-R2 are presented: (a)SiO in CND-R1, (b) HNCO in CND-R1, (c)SiO in CND-R2, (d) HNCO in CND-R2