I have dictionary as shown below
d1:
{'teachers': 49, 
      'students': 289,  
      'R': 3.7, 
      'holidays': 165, 
      'Em': {'from': '2020-02-29T20:00:00.000Z', 'to': '2020-03-20T20:00:00.000Z', 
                  'F': 3, 'C': 2},
      'OS':18 
      'sC': {'from': '2020-03-31T20:00:00.000Z', 'to': '2020-05-29T20:00:00.000Z', 
                  'F': 25, 'C': 31}}
I would like to convert above dictionary as a dataframe as shown below in pandas.
teachers  students R   holidays  Em_from     Em_to       Exam_F  Exam_C  OS  sC_from         sC_to     sC_F   sC_C
49        289      3.7 165       2020-02-29  2020-03-20  3       2       18  2020-03-31  2020-05-29    25     31
 
    