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
<molecule_2d> Given the product provided, propose some possible reactants that could have been employed in its formation.
user
Here are possible reactants: CC(C)(O)c1cn(-c2ccc(-c3cc(F)c(CO)c(S(C)(=O)=O)c3)cc2F)c(C(C)(C)c2c(Cl)cccc2Cl)n1.O=C(O)Cc1ccc(OP(=O)(OCc2ccccc2)OCc2ccccc2)cc1 .
assistant