{HEAD ~ Examples} of such a preferred compound include {TAIL ~ salicylic acid}, thiosalicylic acid, p hydroxybenzoic acid, 3,5 dihydroxybenzoic acid, p aminobenzoic acid, anthranilic acid, p hydroxyphenylacetic acid, and the like 
include
{ HEAD ~ Examples } of such a preferred compound include { TAIL ~ salicylic acid } , thiosalicylic acid , p hydroxybenzoic acid , 3,5 dihydroxybenzoic acid , p aminobenzoic acid , anthranilic acid , p hydroxyphenylacetic acid , and the like
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL 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