6-[5-(6-oxocyclohexa-2,4-dien-1-ylidene)-1,2,4-dithiazolidin-3-ylidene]cyclohexa-2,4-dien-1-one

2-(2-羟基苯基)-4H-苯并[e][1,3]恶嗪-4-酮

2-羟基硫代苯甲酰胺