Scheme 5. Weighted graph representation of the triple adaptation of the [2 × 2] CDN NB from the statistical distribution (top) of the four constituents ¹A¹B, ⁴A¹B, ¹A⁷B and ⁴A⁷B (3.5 mM each) in response to 0.5 eq. Zn²⁺ & 1 eq. Et₃N (middle left), 0.5 eq. Zn²⁺ (middle center) and light irradiation (λ_irr = 310–400 nm, middle right)^a. ^aSee text and ESI for conditions, catalyst and temperature. See Table S8† for numerical values.