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Key indicators Single-crystal X-ray study T = 150 K Mean '(C±C) = 0.008 A Ê Disorder in main residue R factor = 0.074 wR factor = 0.223 Data-to-parameter ratio = 11.9 For details of how these key indicators were automatically derived from the article, see The structure of the title compound, C 21 H 25 NO 3 , comprises a U-shaped molecule with two disordered atoms in the pentene chain. The two components of the two disordered alkane C atoms exist with unequal partial occupancies of 0.70 anddoi:10.1107/s160053680300120x fatcat:n26sp2fryngslcukikafxsnvk4