SMILES

https://doi.org/10.1351/goldbook.ST06980
SMILES (Simplified Molecular Input Line Entry System) is a string notation used to describe the nature and topology of molecular structures.
Source:
PAC, 1997, 69, 1137. (Glossary of terms used in computational drug design (IUPAC Recommendations 1997)) on page 1150 [Terms] [Paper]