{HEAD ~ Q} is independently selected from an alkyl, carbocylic, heterocyclic, halo, carbamoyl, sulfamoyl, carbonamido, sulfonamido, keto, sulfo, nitro, hydroxyl, carboxyl, amino, alkoxy, alkoxycarbonyl, aryloxy, or {TAIL ~ arylthio group} 
is independently selected from
{ HEAD ~ Q } is independently selected from an alkyl , carbocylic , heterocyclic , halo , carbamoyl , sulfamoyl , carbonamido , sulfonamido , keto , sulfo , nitro , hydroxyl , carboxyl , amino , alkoxy , alkoxycarbonyl , aryloxy , or { TAIL ~ arylthio group }
HEAD HEAD HEAD HEAD HEAD REL REL REL REL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL