The time release patch 2, wherein {HEAD ~ said preservative} is {TAIL ~ a bacteriocidal agent} or bacteriostatic agent 
is
The time release patch 2 , wherein { HEAD ~ said preservative } is { TAIL ~ a bacteriocidal agent } or bacteriostatic agent
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH