The molecule with the SMILES representation of O=C1C=CC(=O)c2c1ccc1c2ccc2ccccc21 displays no carcinogenic effects.
The molecule with the {SMILES__description} {#representation of |!}{SMILES#} {#shows|exhibits|displays!} {carcinogen#no &NULL}{carcinogen__names__adjective} {#properties|effects!}.