prov:value
| - as (Ia), (IIa), (IlIa), (IVa), (Va), or (VIa): ##STR5## wherein R and R' are independently selected from the group consisting of a hydrogen atom, a halogen atom, alkyl, alkoxyl, and aryl; m and n are numbers; R1 and R2 are independently selected from the group consisting of alkyl, aryl, and diarylaminoaryl; R3 and R4 are an atom of hydrogen, alkyl, alkoxy, aryl, or halogen, and p is a number.
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