11-oxo-beta-amyrin 30-oxidase activity
Catalysis of the reaction: 11-oxo-beta-amyrin + 3 NADPH + 3 O2 + 2 H+ = glycyrrhetinic acid + 3 NADP + 4 H2O.
GO:0016712
oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, reduced flavin or flavoprotein as one donor, and incorporation of one atom of oxygen
is_a