prov:value
| - where R6 is an alkyl chain of from 1 to 30 carbon atoms, each of R7 through to R16 is independently selected from hydrogen, alkyl, alkenyl, alkynyl, halogen, haloalkyl, nitrile, amine, amide, an ether such as an alkyl ether or an ester such as an alkyl ester group, and
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