@Test public void cxSmiLay2() {

    String cxsmilayers = "|Sg:c:0,1,2::,Sg:c:3::,Sg:mix:0,1,2,3::,SgH:2:1.0|";
    CxSmilesState state = new CxSmilesState();
    assertThat(CxSmilesParser.processCx(cxsmilayers, state), is(not(-1)));
}