prov:value
| - wherein E is a bond or an electron withdrawing group; T is selected from a bond, ???C(O)???, ???C(O)NH???, ???NHC(O)???, an oxygen atom, a sulfur atom, NH, ???S(O)???, ???SO2???, or alkyl substituted with one or more substituents selected from the group consisting of dialkylamine, NO2, CN, SO3H, COOH, CHO, alkoxy, and halogen; L is a linker selected from the group consisting of a bond, ???(CH2)p??
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