 radicals can each be optionally substituted by 0, 0, 0, 0, or 0 substituents independently selected from the group consisting of oxo (═O), thioxo (═S), F, Cl, Br, I,  - CN,  - CF0,  - SF0,  - OH,  - O - CH0,  - O - C0H0,  - O - CH(CH0)0,  - O - C(CH0)0,  - NH0,  - NO0,  - O - CF0,  - S - CF0,  - SH,  - S - CH0,  - S - C0H0,  - S - CH(CH0)0,  - S - C(CH0)0, methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, n-pentyl,  - C(═O) - CH0,  - C(═O) - C0H0,  - C(═O) - CH(CH0)0,  - C(═O) - C(CH0)0,  - C(═O) - OH,  - C(═O) - O - CH0,  - C(═O) - O - C0H0,  - C(═O) - O - CH(CH0)0,  - C(═O) - O - C(CH0)0,  - NH - CH0,  - NH - C0H0,  - NH - C(CH0)0,  - N(CH0)0,  - N(C0H0)0,  - N(CH0) - (C0H0),  - 