[DAT Question of the Day, Click Display Images To See] + Join us on Facebook<http://datquestionoftheday.us4.list-manage.com/track/click?u=d3318065969b7c08ead5d4c4d&id=0527bea59c&e=61d7ba7392> + Connect on Twitter<http://datquestionoftheday.us4.list-manage.com/track/click?u=d3318065969b7c08ead5d4c4d&id=2154b73636&e=61d7ba7392> Gestrinone Gestrinone is a synthetic steroid hormone that is marketed as a treatment for endometriosis. What is the index of hydrogen deficiency (IHD)–or degree of unsaturation–for gestrinone? [http://datquestionoftheday.com/wp-content/uploads/2013/09/dat920.png] A. 9 B. 10 C. 11 D. 12 E. 13 To see the solution and images, visit the following link: http://datquestionoftheday.com/organic-chemistry/gestrinone/<http://datquestionoftheday.us4.list-manage.com/track/click?u=d3318065969b7c08ead5d4c4d&id=4dc5a5310b&e=61d7ba7392>