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 CC(C)OC(=O)C(C)N=[P+]([O-])Oc1c(Cl)ccc2ccccc12.CC1(F)C(n2cc(Br)c(=O)[nH]c2=O)OC(F)(CO)C1O .
assistant