How can I set this piano music?

[Markus Grunwald]

Hello,

I'd like to set the bar that's in the attachment (I apologize if it's
too big - I tried to make it small).

I have a problem with the left hand: I don't know how to set the b2.
This is what I already have:


\version "2.18.2"
\language "deutsch"

global = {
  \key f \minor
  \time 4/4
}

right = \relative c'' {
  \global
  r8 \mp des, g f < des g c >2 \fermata |
}

left = \relative c' {
  \global
  r8 f,8 as4 es es, \fermata |
}

\score {
  <<
    \new PianoStaff <<
      \new Staff = "right" \right
      \new Staff = "left" { \clef bass \left }
    >>
  >>
}

Could you please give me a hand?
-- 
Markus Grunwald
https://www.the-grue.de/~markus/markus_grunwald.gpg

piano.png
Description: PNG image