public_sql_23/table_descriptions.csv

table_name,table_description
molecule,"Stores one record per molecule with a unique text ID and its carcinogenicity classification. The molecule_id may include '+' (carcinogenic) or '−' (non-carcinogenic), while label explicitly states the status."
bond,Stores one record per chemical bond within a molecule. Each bond links to its parent molecule and specifies the bond order through a type code.
connected,"Represents molecular bonds by linking two atom identifiers (atom_id and atom_id2) with a bond identifier (bond_id), enabling reconstruction of atom-to-atom connectivity."
atom,"Stores one record per atom, with a unique atom_id, the molecule_id of its parent molecule, and the atom's chemical element."