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
Given the following product, please provide possible reactants. <molecule_2d>
user
Possible reactant(s): CC[Si](CC)(CC)OC1(C(F)(F)F)CCC2(C(=O)O)c3cc4cnn(-c5ccc(F)cc5)c4cc3CCCC2C1.NC1CC1 .
assistant