Thieno[2,3-d]pyrimidine-5-carboxylic acid, 1,2,3,4-tetrahydro-3,6-dimethyl-1-(2-methylpropyl)-2,4-dioxo-, methyl ester 5g

Thieno[2,3-d]pyrimidine-5-carboxylic acid, 1,2,3,4-tetrahydro-3,6-dimethyl-1-(2-methylpropyl)-2,4-dioxo-, methyl ester 5g