$[Mn_{12}O_{12}(O_2CPh-4-SMe)_{16}(H_2O)_4]{cdot}7CH_2Cl_2$ (1), a new single-molecule magnet complex has been successfully synthesized by substitution of acetate ligand of Mn12ac with 4-(methylthio)benzoic acid. Complex 1 crystallizes into triclinic P$overline{1}$ with a = 18.321(3) $AA$, b = 19.011(3) $AA$, c = 27.230(4) $AA$, $alpha$ = 86.973(3)$^{circ}$, $eta$ = 76.919(3)$^{circ}$, $gamma$ = 87.613(3)$^{circ}$, and Z = 2. In complex 1, one Mn(III) ion has an abnormal Jahn-Teller elongation axis oriented at an oxide ion. Complex 1 has two out-of-phase ac susceptibility peaks in the 2-4 K and 4-7 K regions. Effective anisotropy energy barrier and pre-exponential factor are $U_{eff}$ = 45.95 K, 1/$ au$0 = 8.6 ${ imes};10^9s^{-1};for;{chi}_M$" peaks in the lower temperature region and $U_{eff}$ = 59.45 K, 1/$ au_0$ = 2.2 ${ imes};10^8;s^{-1}$ for $chi_M$" peaks in the higher temperature region. The parameters of S = 10, g = 1.87, D = -0.40 $cm^{-1}$, and E = 0.00034 $cm^{-1}$ were obtained from the M/N${mu}_B$ vs. H/T plot of complex 1.