{TAIL ~ These complexes} are insoluble in {HEAD ~ methylene chloride} and can be separated from unreacted polyetherimide by filtration 
{ TAIL ~ These complexes } are insoluble in { HEAD ~ methylene chloride } and can be separated from unreacted polyetherimide by filtration
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH