{HEAD ~ The esters} preferably have a low boiling point, particularly below 100° C. at {TAIL ~ normal pressure} 
{ HEAD ~ The esters } preferably have a low boiling point , particularly below 100 ° C. at { TAIL ~ normal pressure }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL