2,2-Dimethyl-propionic acid 2-acetyl-2-bromo-12-(2,2-dimethyl-propionyloxy)-6,11-dioxo-1,2,3,4,6,11-hexahydro-naphthacen-5-yl ester 生成 2,2-Dimethyl-propionic acid 2-acetyl-12-(2,2-dimethyl-propionyloxy)-2-hydroxy-6,11-dioxo-1,2,3,4,6,11-hexahydro-naphthacen-5-yl ester