MeSH note : a dipeptidyl peptidase 4 probe; BCD defines the backbone of the probe comprising an
aniline derivative as on/off switch, a 7-amino-4-methyl-2(1H)-quinolinone (cs-124)
as antenna moiety, and a diethylenetriamine-N,N,N',N'',N'''-pentaacetic acid (DTPA)
as chelator moiety, Tb terbium; structure in first source;