There is provided a compound of formula I, . The support structure generally includes a cross bar horizontally supported by first and second leg assemblies. In addition, preferred reagents of this invention are relatively mild and do not oxidize vulnerable residues in the subject peptide. In other embodiments, the present invention provides terminal protein linked adenoviral DNA. A cap is removably secured to the second end of the barrel so the removing tool can be grasped by a user in order to rotate the barrel within the user’s rectum.