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