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
Given the following product, please provide possible reactants. <molecule_2d>
user
Possible reactant(s): COC(=O)C1=Cc2cc(O)ccc2CCC1.FC(F)(F)c1cc(CBr)cc(C(F)(F)F)c1 .
assistant