@Test
public void peglinker() {

    List<String> tokens = new ArrayList<>();
    assertTrue(AbbreviationLabel.parse("CH2CH2OCH2CH2O", tokens));
    assertThat(tokens.size(), is(10));
    assertThat(tokens, hasItems("C", "H2", "C", "H2", "O", "C", "H2", "C", "H2", "O"));
}