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
Based on the given product, provide some plausible reactants that might have been utilized to prepare it. <molecule_2d>
user
Fc1ncccc1C1CCOCC1.OC1CC(c2nc3ccccc3[nH]2)C1
assistant