7-[(4-bromophenyl)-(6-hydroxy-8-oxo-3,4-dihydro-2H-pyrimido[2,1-b][1,3]thiazin-7-yl)methyl]-6-hydroxy-3,4-dihydro-2H-pyrimido[2,1-b][1,3]thiazin-8-one
7-[(4-bromophenyl)-(6-hydroxy-8-oxo-3,4-dihydro-2h-pyrimido[2,1-b][1,3]thiazin-7-yl)methyl]-6-hydroxy-3,4-dihydro-2h-pyrimido[2,1-b][1,3]thiazin-8-one