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The asymmetric unit (a) and hydrogen-bonding network (b) of II. In b, the structure is propagated along the crystallographic b and c directions showing that PRO, one EtOH, and a pair of H2O molecules are sandwiched in-between the layers generated by PUE. The PRO and crystalline solvates were distinguished by dark magenta for clarity purposes. Color codes: O (red), N (blue), C (black), H (light yellow).
