prov:value
| - bond, ##STR57## and combinations thereof where r and r' are independently integers of 1 to about 20, s is independently an integer of 1 to about 10 for each (Cs H2s O), t is an integer of 1 to about 6, and p is an integer of 0 to about 4; R is selected from the group consisting of ##STR58## where R' is selected from the group consisting of --Cl, --F, --CF3, --NO2, --CN, --H, ##STR59## where q and
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