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 CCC(C(C)OCc1ccccc1)n1ncn(-c2ccc(N3CCN(c4ccc(O)cc4)CC3)cc2)c1=O.Cc1ccc(S(=O)(=O)OCC2COC(Cn3cncn3)(c3ccc(F)cc3F)C2)cc1 .
assistant