passages.id: split_4_test_597_passage
passages.type: progene_text
passages.text: The gadolinium complex of analogue 6 , N-(2-butyryloxyethyl)-N'-(2-ethyloxyethyl)-N,N'-bis[N' ',N' '-bis(carboxymethyl)acetamido]-1,2-ethanediamine ( ABE-DTTA ) , has demonstrated its potential as a water - soluble , cardiac - specific , MRI contrast agent .