prov:value
| - where each n independently is 1, 2 or 3, each m independently is 1, 2, 3, 4, or 5, each k is 1 or 2, each X is N, P, P???O or N???O, each Y is substituted or unsubstituted alkyl, substituted or unsubstituted alkoxy, substituted or unsubstituted aryl, or substituted or unsubstituted aryloxy, L is a linking group optinally terminated by O and includes at least one carbonate, carbamate, amide, ester
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