prov:value
| - s isopropylidene, methylene, sulfonyl or oxy, and n is an integer of 1 to 10, ##STR7## wherein R2 is an alkylene having 2 to 50 carbon atoms, an alkenylene having 2 to 50 carbon atoms, an aralkylene having 7 to 50 carbon atoms, or an aromatic group having 6 to 30 carbon atoms, and ##STR8## wherein R3 is an alkylene having 2 to 50 carbon atoms, a hydroxyalkylene having 2 to 50 carbon atoms, an aral
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