The SMILES O=C1c2ccccc2-c2ccc3c4c(ccc1c24)-c1ccccc1C3=O is from a molecule that is not identified as Ames mutagenic.
The {SMILES__description} {SMILES#} {#represents|is from!} a molecule that is {mutagenic#not &NULL}identified as {mutagenic__names__adjective}.