Z3 represents the atoms necessary to complete a mono or bicyclic aromatic or heterocyclic ting system containing 5 to 10 ring atoms and C is in {HEAD ~ an ortho or para position} relative to {TAIL ~ W} 
relative to
Z3 represents the atoms necessary to complete a mono or bicyclic aromatic or heterocyclic ting system containing 5 to 10 ring atoms and C is in { HEAD ~ an ortho or para position } relative to { TAIL ~ W }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL