@Test
public void testBicyclicCompound() throws Exception {

    SmilesParser sp = new SmilesParser(DefaultChemObjectBuilder.getInstance());
    IAtomContainer molecule = sp.parseSmiles("C1CCC(CCCCC2)C2C1");
    IRingSet ringSet = new SSSRFinder(molecule).findSSSR();
    Assert.assertEquals(2, ringSet.getAtomContainerCount());
}