{HEAD ~ The composition} 1, wherein {TAIL ~ the water} soluble and non peptidic polymer having two or more terminal hydroxyl groups has from 2 to 300 hydroxyl groups 
wherein
{ HEAD ~ The composition } 1 , wherein { TAIL ~ the water } soluble and non peptidic polymer having two or more terminal hydroxyl groups has from 2 to 300 hydroxyl groups
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH