| http://www.w3.org/ns/prov#value | - A compound represented by Formula I: ##STR11## where R1, R2, and R3 are independently selected from the group consisting of (a) --Y--CH2 CH2)x H where x is an integer of 1 to 20, Y is O, S, NH, or NR where R is an alkyl group having 1 to 10 carbon atoms, (b) an alkyl substituent having 1 to 6 carbon atoms, (c) an alkoxy group having 1 to 6 carbon atoms, (d) --O--R4 --O)p R5 where R4 is an alkylene
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