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)(C)OC(=O)N1CC2CC(c3nc(CCCO[Si](C)(C)C(C)(C)C)cs3)=C(C(=O)N(Cc3cccc(Cl)c3Cl)C3CC3)C(C1)N2C(=O)OC(C)(C)C .
assistant