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(=O)OCc1c(-c2cc(Nc3ccc(N4CC5(CN(C(=O)OC(C)(C)C)C5)C4)cn3)c(=O)n(C)n2)cccc1-n1ncc2cc(C(C)(C)C)cc(F)c2c1=O .
assistant