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: C=CC1CC1(NC(=O)C1CC(Oc2cc(-c3nc(C(C)C)cs3)nc3c(Cl)c(OC)ccc23)CN1)C(=O)OCC.C=CCCCCCC(C)(C)C(=O)O .
assistant