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
With the given product <molecule_2d>, suggest some likely reactants that were used in its synthesis.
user
CI.COc1ccc2[nH]cc(-c3cc4c(OC)ncnc4n3S(=O)(=O)c3ccc(C)cc3)c2c1
assistant