2,2,4,8-tetramethyl-2H,6H-pyrimido[2,1-b][1,3]thiazin-6-one 2H,6H-pyrimido[2,1-b][1,3]thiazin-6-one, 2,2,4,8-tetramethyl- InChI=1/C11H14N2OS/c1-7-5-9(14)13-8(2)6-11(3,4)15-10(13)12-7/h5-6H,1-4H