The SMILES O.O.O.O.O.O.O=[N+]([O-])[O-].O=[N+]([O-])[O-].[Mg+2] is not toxic in the p53 response assay.
The {#molecule |!}{SMILES__description} {SMILES#} is {toxicity_SR-p53#not &NULL}{toxicity_SR-p53__names__adjective}.