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In the crystal structure of the title osthol derivative, C 18 H 23 NO 4 , mol­ecules are linked by N—H⋯O hydrogen bonds into an infinite chain running parallel to the  c  axis. The CH 3 CH 2 – atoms of the propionamide group are disordered over two sets of sites with refined occupancies of 0.689 (12) and 0.311 (12).

N-[4-(7-Methoxy-2-oxo-2H-chromen-8-yl)-2-methylbutan-2-yl]propionamide