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The title compound, C27H45Cl, is a second monoclinic polymorph which crystallizes in the space group P21 with four crystallographically independent mol­ecules in the asymmetric unit. The structure was previously reported [Bernal et al. (1940). Philos. Trans. R. Soc. London Ser. B, 239, 135–182; Vani & Vijayan (1979). Mol. Cryst. Liq. Cryst. 51, 253–264], also in the space group P21, but with two unique mol­ecules in the asymmetric unit. As in the previously reported structures, rings A and C in the mol­ecule adopt chair conformations with half-chair conformations for rings B and D. The ring junctions BC and CD are trans, whereas the junction AB is quasi-trans. In the crystal structure, mol­ecules are arranged in a head-to-tail fashion along a and are stacked along the b axis.
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