A bear wandered into town and died, apparently of natural causes,and the forensic lab wants to determine the?

types of food the bear ate.When the contents of its stomach are yzed,this is found(glucose,adenine,galactose,long chains of carbon with COOH@one end,ribose,fragments with phosphate&nitrogen components,deoxyribose,cytosine,and chitin.) Can you help me determine what molecules the bear consumed?(lipids, proteins,carbs,nucleic acids.?) Were beef or milk present you think? Did any other plants or animals contribute to the stomachs contents?? PLEASE HELP! I appreciate it!