InChI=1/C14H16N2O4S/c1-3-19-12(17)7-20-14-10(6-15)9-4-5-21-8-11(9)13(16-14)18-2/h3-5,7-8H2,1-2H acetic acid, [(5-cyano-3,4-dihydro-8-methoxy-1H-thiopyrano[3,4-c]pyridin-6-yl)oxy]-, ethyl ester ethyl [(5-cyano-8-methoxy-3,4-dihydro-1H-thiopyrano[3,4-c]pyridin-6-yl)oxy]acetate