prov:value
| - 2 --, --SO2 --, --SO2 --Cr H2r --, ##STR55## --N(Cp H2p+1)--, ##STR56## --CH???N--, and combinations thereof, where r and r' are independently integers of 0 to 20, s is independently an integer of 1 to 10 for each (Cs H2s O), t is an integer of 1 to 6, and p is an integer of 0 to 4; R is selected from the group consisting of --O--((Cq' H2q'--v' --(R')v')--O)w --Cq H2q+1--v --(R')v, --((Cq' H2q'--v
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