electronic reprint Acta Crystallographica Section E Structure Reports Online ISSN 1600-5368 Editors: W.T. A. Harrison, H. Stoeckli-Evans, E. R. T. Tiekink and M. Weil (5R,6S,8S,9R,14R,15R,17R,18S,21S,24R,26S,27R )-5α-Chloro- 16,24-cyclo-13,14-secoergost-2-ene-18,26-dioic acid-14:17,14:27-diepoxy-6β ,13,20,22-tetrahydroxy-1,15- dioxo-γ -lactone δ -lactone methanol solvate monohydrate M. Iqbal Choudhary, Sammer Yousuf, Atta-ur-Rahman, Shazia Anjum, Hoong-Kun Fun and Shamsher Ali Acta Cryst. (2005). E61, o3523–o3525 Copyright c  International Union of Crystallography Author(s) of this paper may load this reprint on their own web site or institutional repository provided that this cover page is retained. Republication of this article or its storage in electronic databases other than as specified above is not permitted without prior permission in writing from the IUCr. For further information see http://journals.iucr.org/services/authorrights.html Acta Crystallographica Section E: Structure Reports Online is the IUCr’s highly popu- lar open-access structural journal. It provides a simple and easily accessible publication mechanism for the growing number of inorganic, metal-organic and organic crystal struc- ture determinations. The electronic submission, validation, refereeing and publication facilities of the journal ensure very rapid and high-quality publication, whilst key indica- tors and validation reports provide measures of structural reliability. The journal publishes over 4000 structures per year. The average publication time is less than one month. Crystallography Journals Online is available from journals.iucr.org Acta Cryst. (2005). E61, o3523–o3525 Yousuf et al. · C 28 H 31 ClO 10 ·CH 4 O·H 2 O