C15H15N3OS, monoclinic, P21/c (No. 14), a=10.2852(5) Å, b=10.1649(5) Å, c=14.7694(8) Å, =107.442(2)°, V =1473.12(13) Å3, Z =4, Rgt(F)=0.0449, wRref(F2)=0.1275, T =293(2) K.