| http://www.w3.org/ns/prov#value | - wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12 and R13 can be the same or different and each, independently of the others can be (but are not limited to) hydrogen, alkyl having from about 1 to about 50, or from about 1 to about 30 carbons, such as methyl, ethyl, propyl, and the like, and including cyclic alkyl having from about 4 to about 30 carbons, or from about 4 to about 8 carbons,
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