12H-benzothiazolo[2,3-b]quinazolin-12-one, 8-chloro-1,2,3,4-tetrahydro- 8-chloro-1,2,3,4-tetrahydro-12H-[1,3]benzothiazolo[2,3-b]quinazolin-12-one InChI=1/C8H5N3S/c1-2-4-7-6(3-1)11-8(12-7)5-9-10-11/h1-5