Synonyms: NSC375966;74122-58-0;Methyl (6,6-dioxido-4-oxo-3,4-dihydro-2H,5H-thiopyrano[3,2-c]thiochromen-3-yl)(oxo)acetate;Methyl (6,6-dioxido-4-oxo-3,4-dihydro-2H,5H-thiopyrano(3,2-c)thiochromen-3-yl)(oxo)acetate;AC1L7UWC;AG-G-94276;NSC 375966;NSC-375966;methyl 2-oxo-2-(4,6,6-trioxo-3,5-dihydro-2H-thiopyrano[3,2-c]thiochromen-3-yl)acetate