how to access json field with "-" e.g. 'data-id': 'smth'

Question

I need some help, so I need to access the field in json, I got the json from an API, I know how to access a json but there's one problem, I can't access the field with apostrophe

here's the json I received:

datas: {
  stats: {
    attack: 60
    defense: 70
    'special-defense': 50
    speed: 90
  }
}

I want to access the special-defense, I have tried datas.stats.special-defense but isn't working, I tried datas.stats.'special-defense' too and it's giving invalid syntax. I can access another field like speed,attack, and defense with datas.stats.speed etc.

is there any way to access that field?