It is also {HEAD ~ an object} of {TAIL ~ the invention} to provide agents for the oxidative dyeing of hair that are based upon bis alkanols as coupling components 
of
It is also { HEAD ~ an object } of { TAIL ~ the invention } to provide agents for the oxidative dyeing of hair that are based upon bis alkanols as coupling components
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD 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