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
To synthesis <molecule_2d>, what are the possible reactants? Write in the SMILES representation.
user
CC(C)C1=C(C(=O)N2CC(F)CC2C(=O)N2CCN(C(=O)C(F)(F)F)C3(CC3)C2)SC2=NC(C)(c3ccc(Cl)nc3)C(c3ccc(Cl)c(F)c3)N21
assistant