| http://www.w3.org/ns/prov#value | - n R1 is hydrogen or a methyl group, R20 is one species or a mixture of two or more species of oxyalkylene group of 2 to 4 carbon atoms, providing two or more species of the mixture may be added either in the form of a block or in a random form, R3 is hydrogen or an alkyl group of 1 to 5 carbon atoms, and m is a value indicating the average addition mol number of oxyalkylene groups that is an integ
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