7-Methoxy-4-methyl-5-thia-1,2,2a-triaza-acenaphthylen-3-one 8-methoxy-5-methyl-4,5-dihydro-1,2,3-triazolo[3,4,5-d,e]-1.4-benzothiazin-4-one AIDS-085889 AIDS085889 NSC672982