(1R,6S)-1,6-dihydroxy-4-methylcyclohexa-2,4-diene-1-carboxylate + NADP(+) => 4-methylcatechol + CO2 + NADPH
(1r,6s)-1,6-dihydroxy-4-methylcyclohexa-2,4-diene-1-carboxylate + nadp(+) => 4-methylcatechol + co2 + nadph