c1ccccc1
Reaction SMIRKS %5BC%3A3%5D%28%5B%238%3A1%5D%29%5B%238%3A2%5D%3E%3E%5B%238%3A1%5D.%5B%238%3A2%5D.%5BC%3A3%5D%3D%5BO%5D