6-Formylamino-8-methoxy-2,3,4,5-tetrahydro-1,5-benzothiazepin-4-one AIDS-085852 AIDS085852 N-(8-Methoxy-4-oxo-2,3,4,5-tetrahydro-benzo[b][1,4]thiazepin-6-yl)-formamide NSC683356