(S)-2,2',2'',2'''-(2-(4-nitrobenzyl)-1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrayl)tetraacetic acid compound with 2,2,2-trifluoroacetic acid (1:x) 25mg

(S)-2,2',2'',2'''-(2-(4-nitrobenzyl)-1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrayl)tetraacetic acid compound with 2,2,2-trifluoroacetic acid (1:x) 25mg