How to play a Db9/11 chord on Accordion

AKA: Db7/9/11, Db9(11), Db9/11, Db Dominant 11th, Db Dominant 7th/9th/11th, Db Dominant eleventh, Db Dominant ninth eleventh, Db Dominant seventh ninth eleventh

Notes:

D♭, F, A♭, C♭, E♭, G♭
(D♭, F, A♭, B, E♭, G♭)

Intervals:

R, 3°, 5°, m7°, 9°, 11°

Left hand:

D♭ + G♭M
(C# + BM)

or

D♭ + D♭M + G♭M
(C# + C#M + BM)

Fingering:

2 + 4

or

3 + 2 + 4