You are pretty lucky to have that but then again you must be out of date with the best purpose for your material which is by far troparil or even better 4 fluoro troparil. Cocaine will be way harder to make and most of all separating the good part as the other is toxic. To keep it simple you must form anhydroecgonine which easily reacts with PhLi or PhMgBr to afford troparil.