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Figure 4 A view perpendicular to the plane defined by atoms S1—S2/C1—C4/N1—N2 which has a weak π-stack to the plane defined by atoms S1ii, C1ii, and N1ii [Symmetry code: (ii) 1 − x, 1 − y, −z]. Hydrogen atoms are omitted for clarity. Thermal ellipsoids are drawn at the 50% probability. |