prov:value
| - is 0-3; f is 0 or 1; n is 0-10; g is 0-3; o is 0-5; Z.sup.2 is a hydrogen, a carboxylic acid, ahydroxy, a phosphato, a phosphato ester, a sulfonyl, a sulfonate, a sulfate, a branched or straight-chained polyalkylene oxide, a nitryl, a glyceryl, an aryl unsubstituted or substituted with a C.sub.1-30 alkylene or alkenylene, a carbohydrateunsubstituted or substituted with a C.sub.1-10 alkylene or al
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