Help remove and identify trojan found with virus scan

I am new to Norton internet security.  I ran a scan, ask it to repair all and it left (repair failed) to the below file which I can not locate to manually remove.  I could use help.  /User/John/Library/...3f4dd0a8-133a61ed   detail  Trojan Horse    It is listed three times.

I am disappointed that norton would not remove it.  Is it possible that it is not really a problem?   The computer is a macbook pro.

Thank You for your help,  John