\definesubmol{ce3}{
               H_2N% 12
         -[,,2]% 2
        =_[:60]% 1
              -% 6
                  (
             -[:60]O% 8
                  -% 9
                  )
       =_[:300]% 5
                  (
            -[:240]% 4
           =_[:180]% 3
                      (
                -[:240]O% 10
                -[:180]% 11
                      )
            -[:120]% -> 2
                  )
              -N% 7
        -[:240]% 13
        -[:315]% 14
         -[:15]O% 15
        -[:300]% 16
              -% 17
         -[:60]O% 18
        -[:345]% 19
         -[:45]% 20
        -[:120]N% 21
                  (
            -[:120]% 24
            -[:180]% 37
    -[:231.5,1.089]O% 25
    -[:128.1,1.084]% 23
            -[:180]% 22
            -[:240]\phantom{N}% -> 7
                  )
              -% 26
        =_[:60]% 27
                  (
            -[:120]O% 33
            -[:180]% 34
                  )
              -% 31
       =_[:300]% 30
                  (
            -[:240]% 29
                      (
                -[:300]O% 35
                      -% 36
                      )
           =_[:180]% 28
            -[:120]% -> 26
                  )
        -[,,,1]NH_2% 32
}