2-Methyl-4-phenyl-8-Methoxy-4,5-dihydro-imidazol[3,4,5-d,e]-1,4-benzothiazin-4-one 7-Methoxy-2-methyl-4-phenyl-5-thia-1,2a-diaza-acenaphthylen-3-one AIDS-085858 AIDS085858 NSC672985