For actual synthesis, the appropriate reagents and reaction conditions are applied to a reaction vessel containing {HEAD ~ the specified quantity} of {TAIL ~ beads} 
of
For actual synthesis , the appropriate reagents and reaction conditions are applied to a reaction vessel containing { HEAD ~ the specified quantity } of { TAIL ~ beads }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL