message: handle deuterated
diff: @@ -136,7 +136,7 @@ export abstract class LigandEncoder implements Encoder<string> {
  if (this.hydrogens) {
  return false;
  }
  - return type_symbol === 'H';
  + return type_symbol === 'H' || type_symbol === 'D';
  }
  private getSortedFields<Ctx>(instance: Category.Instance<Ctx>, names: string[]) {
  