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): CS(=O)(=O)OCCC1(O)CC1.Cc1c(C(=O)Nc2ccc(Oc3ccnc4cc(O)ccc34)c(F)c2)c(=O)n(-c2ccccc2)n1C .
assistant