https://files.rcsb.org/ligands/download/EDO.cif

https://models.rcsb.org/v1/1s9v/ligand?auth_seq_id=501&label_asym_id=G&encoding=sdf&filename=1s9v_G_EDO.sdf

https://models.rcsb.org/v1/1s9v/ligand?auth_seq_id=504&label_asym_id=H&encoding=sdf&filename=1s9v_H_EDO.sdf

https://models.rcsb.org/v1/1s9v/ligand?auth_seq_id=502&label_asym_id=I&encoding=sdf&filename=1s9v_I_EDO.sdf

https://models.rcsb.org/v1/1s9v/ligand?auth_seq_id=503&label_asym_id=J&encoding=sdf&filename=1s9v_J_EDO.sdf

https://cdn.rcsb.org/images/ccd/labeled/E/EDO.svg

https://models.rcsb.org/v1/1s9v/ligand?auth_seq_id=501&label_asym_id=G&encoding=mol2&filename=1s9v_G_EDO.mol2

https://models.rcsb.org/v1/1s9v/ligand?auth_seq_id=504&label_asym_id=H&encoding=mol2&filename=1s9v_H_EDO.mol2

https://www.ebi.ac.uk/pdbe/

https://en.wiktionary.org/w/index.php?title=isoform&oldid=81147437