| http://www.w3.org/ns/prov#value | - radical, [0200] R30 may be chosen from hydrogen and a lower alkyl radical such as methyl and ethyl, [0201] R31 may be chosen from hydrogen and a lower alkyl radical such as methyl and ethyl, [0202] R32 may be chosen from a lower alkyl radical such as methyl and ethyl, and a radical corresponding to the formula: ???R33???N(R31)2, [0203] R33 may be chosen from ???CH2???CH2???, ???CH2???CH2???CH2???
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