preferred_name: 3,6,8,9-tetrahydroxy-1-oxo-3-(2-oxopropyl)-1,2,3,4-tetrahydroanthracene-2-carboxyl-[ACP] + NADPH + O2 + H(+) => 2,3,6,8,9-pentahydroxy-1-oxo-3-(2-oxopropyl)-1,2,3,4-tetrahydroanthracene-2-carboxyl-[ACP] + NADP(+) + H2O