{TAIL ~ A multireactive polymerizable mesogenic compound} 1, wherein {HEAD ~ R2} is a group of one of the following formulae 
{ TAIL ~ A multireactive polymerizable mesogenic compound } 1 , wherein { HEAD ~ R2 } is a group of one of the following formulae
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH