| http://www.w3.org/ns/prov#value | - In another embodiment, L is ???(CH2)nNR3???, wherein R3 is hydrogen, alkyl or aryl and n is an integer ranging from about 1 to about 10; each M is independently ???C(O)(CH2)kO???, ???(CH2)iO??? or ???(CH2)jNH???, wherein i, j and k are independently integers from 1 to about 5.
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