ppo_checkpoints/model_step_2500/tokenizer_config.json

{
  "tokenizer_class": "FastChemTokenizerSelfies",
  "model_max_length": 512,
  "padding_side": "right",
  "truncation_side": "right",
  "special_tokens": {
    "bos_token": "<s>",
    "eos_token": "</s>",
    "pad_token": "<pad>",
    "unk_token": "<unk>",
    "mask_token": "<mask>"
  }
}