| http://www.w3.org/ns/prov#value | - claim 17, wherein R26 and R27 are linear hydrocarbon groups of from 4 to 20 carbons, R28 is a hydrocarbon group of from 6 to 20 carbons, R29 is a hydrocarbon group of from 8 to 26 carbons, and R30 is a hydrocarbon of from 8 to 30 carbons. 19.
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