| http://www.w3.org/ns/prov#value | - e formula: ##STR10## wherein R1 is a group having its formula selected from the group consisting of --CH2 CH2 CH2 --NH--CH2 CH2 --NH2, --CH2 CH(CH3)CH2 --NH--CH2 CH2 --NH2, and --CH2 CH2 CH2 --NH2 wherein x, y, x', and y' are as defined above.
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