 R00 and R00 each independently            stand for a radical selected from the group consisting of methyl,  - CH0 - O - CH0, ethyl, n-propyl, n-butyl, sec-butyl, isobutyl, tert-butyl, n-pentyl, 0-pentyl, n-hexyl, (0,0)-dimethylbutyl,  - CH0 - CH0 - O - CH0,  - CH0 - CH0 - O - C0H0, and  - CH0 - CH0 - CH0 - O - CH0;        or for a radical selected from the group consisting of 0,0-dihydro-0H-indenyl, cyclopropyl, oxetanyl, cyclobutyl, cyclopentyl, cyclohexyl, imidazolidinyl, tetrahydrofuranyl, tetrahydrothiophenyl, pyrrolidinyl, piperidinyl, morpholinyl, piperazinyl, azepanyl, diazepanyl, azocanyl, and thiomorpholinyl, each of which can be optionally substituted by 0, 0, 0, 0, or 0 substituents independently selected from the group consisting of methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, and n-pentyl;or            R00 and R00 form, together with the interconnecting nitrogen atom as ring member, a radical selected from the group consisting of 0