c) Give the structure of the products of the following two reactions, paying particular attention to any issues of stereochemistry. Provide a curly arrow reaction mechanism to explain the formation of the product in cach case, including the origin of the stereochemistry. i) CH 1. EL A 2. H/H, CH10 ii) 1. PhMgBr CH 2. H7H20 B C.H29NO Bn