The method 1 wherein said alkanolamine is selected from {HEAD ~ the group} consisting of {TAIL ~ ethanolamine} and propanolamine 
consisting of
The method 1 wherein said alkanolamine is selected from { HEAD ~ the group } consisting of { TAIL ~ ethanolamine } and propanolamine
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH