code: private boolean isMacroCycle(IRing ring, IRingSet rs) {
          if (ring.getAtomCount() < 8)
              return false;
          for (IBond bond : ring.bonds()) {
              boolean found = false;
              for (IAtomContainer other : rs.atomContainers()) {
                  if (ring == other)
                      continue;
                  if (other.contains(bond)) {
                      found = true;
                      break;
                  }
              }
              if (!found)
                  return true;
          }
          return false;
      }
docs: Check if a ring in a ring set is a macro cycle. We define this as a
  ring with >= 10 atom and has at least one bond that isn't contained
  in any other rings.
  
  @param ring ring to check
  @param rs   rest of ring system
  @return ring is a macro cycle