A derivative of one of these compounds contains additional dimethyl amino and acetate groups and is sold as ellaOne. Russell E. Marker synthesized one of these compounds by degrading diosgenin. The “suppression” of one of these compounds is measured in a test in which patients ingest a pill containing dexamethasone the night before. A natural precursor to one of these compounds is formed by four concerted cationic cyclization reactions from squalene epoxide. Premarin (10[1])is a conjugated equine type of these compounds that is sulfated (10[1])on the A ring of their ABCD classification system. The adrenal cortex produces a class of these compounds prefixed by “mineral” and “gluco.” For 10 points, name these lipids with four fused rings, (10[1])the skeleton of most sex hormones. ■END■ (10[1])