As the folding of single polymer chains has been shown to depend on backbone stiffness, we examined two different backbone stiffnesses quantified by the Kuhn length: the as-parameterised stiffness (which we will refer to as "regular" stiffness), and a more flexible chain (referred to as "flexible"). To model the more flexible chain, the coefficients of the 1(7)-3-3 angles and 3-7-7-1 dihedral were reduced to 1% of the values of the regular stiffness backbone (see ESI Section S14 for parameters and plots of these modified potentials), reducing the Kuhn length of the chain by 30-40% in the "good" solvent (ESI Fig. ).