(S)-5,6,7,9-TETRAHYDRO-3-HYDROXY-1,2-DIMETHOXY-10-(METHYLTHIO)-9-OXOBENZO[A]HEPTALEN-7-YLCARBAMIC ACID, ETHYL ESTER Carbamic acid, 5,6,7,9-tetrahydro-3-hydroxy-1,2-dimethoxy-10-(methylthio)-9-oxobenzo[a]heptalen-7-yl, ethyl ester, (S)- Carbamic acid, [5,6,7,9-tetrahydro-3-hydroxy-1,2-dimethoxy-10-(methylthio)-9-oxobenzo[a]heptalen-7-yl]-, ethyl ester, (S)- NSC376251