"Some features of cannot be converted to smiles" problem

I've recently discovered several chemical using  chemaxon.formats.MolExporter , chemaxon.reaction.Reactor class. but library throw exception .

I think that my smiles has error. above my smiles .  

[#6:3][C:2](=[O:1])[Cs]>>[O:6][C:4](=[O:5])[C:3][C:2]([#1,#6:8])=[O:1] 

 

I want to modify my smile.

help me please. 

 

java source :

Reactor reactor = new Reactor();

reactor.setReaction(MolImporter.importMol(smiles));  // my smiles string set 

reactor.setReactant(reactant); 

Molecule[] products;

while ((products = reactor.react()) != null) {

     for (Molecule product : products) {

         String productSmiles = MolExporter.exportToFormat(product , "smiles");  //this line throw exception 

     }

 }

AND exception message :

 

Some features of OCCC(C(O)=O)C([#1,#6])=O cannot be converted to smiles. Use the cxsmiles, smarts or cxsmarts format. 

Some features of OC(=O)CC(C(O)=O)C([#1,#6])=O cannot be converted to smiles. Use the cxsmiles, smarts or cxsmarts format.

Your reaction scheme is incorrect: it adds a list atom to the product, so it will create a query molecule as product. Molecules with query features (like list atoms) cannot be exported to SMILES, because SMILES format does not support query features. 

Fix: replace the list atom on the right side of your reaction scheme with a normal atom.