prov:value
| - In another embodiment, R17 is a phenyl or substituted phenyl having the general formula Substituents X1-X5 on the phenyl ring can include hydrogen, fluorine, chlorine, bromine, iodine, carboxyl, alkyl, alkene, alkyne, sulfonate, amino, ammonium, amido, nitrile, alkoxy, where adjacent substituents are taken together to form a ring, and combinations thereof.
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