You are a chemist. Now you are given a product molecule. Please predict the the reactant molecules of the reaction.
The reaction equation has the following format:
```
reactant1.reactant2. ... .reactantN>>product
```
Your task is to predict the structure representation of the reactant molecule. We provide the SMILES of the reactants.
system
Do retrosynthesis with the product <molecule_2d> .
user
OK. The reactants may be CS(=O)(=O)OCC1CCCN(C(=O)C2(c3ccc(Cl)cc3)CCC2)C1.FC(F)(F)Oc1ccccc1N1CCNCC1 .
assistant