fix: correct vocab size in config.json and update token IDs in tokenizer.json

update vocab size in config.json and adjust token IDs in tokenizer.json

add additional special tokens for stereochemistry representation in tokenizer.json

add pre-tokenizer configuration to tokenizer.json for stereochemistry

add stereochemistry support

update README

Merge branch 'main' of https://huggingface.co/DeepChem/SmilesTokenizer_PubChem_1M

initial commit

Create README.md

change vocab size

duplicate smiles-tokenizer 1m model

initial commit