An object of {TAIL ~ the present invention} is therefore to provide novel compounds having {HEAD ~ an affinity} for the lungs 
An object of { TAIL ~ the present invention } is therefore to provide novel compounds having { HEAD ~ an affinity } for the lungs
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH