Exercise: determine the topology of your own structure simplified according to one of algorithms from Module 4. Check that the topology of RESORA13 is indeed cds single: Could you think of a different representation? Try to describe it as 3-c utp.
Answer: The cds topology for the structure RESORA13 can be obtained according to standard representation (see Module 4, Task 1, Example 2; nodes of the underlying net correspond to H-bonded resorcinol molecules), but to get the utp net you should use Simplify Adjacency Matrix (see Module 4, Task 2, Example 2) procedure to remove all 0-, 1-, and 2-c atoms that are connected with hydrogen and valence bonds. In the first case each resorcinol molecule is a node of the underlying cds net and in the second case we have dimers isolated with H-bonds.
What should you do if you have got a topology unknown to ToposPro? Read Appendix 6!