Notes used in D♭ minor Dominant 7 First Inversion Chord:
F♭ + A♭ + C♭ + D♭
minor Dominant 7 First Inversion chords are played combining a root, minor (♭) third, perfect fifth, and minor (♭) seventh notes of the root note's major scale.
minor Dominant 7 First Inversion Chord Formula:
3♭ + 5 + 7♭ + 1