The SMILES Cn1nnc2c(C(N)=O)ncn2c1=O represents a molecule that is identified as toxic.
The {SMILES__description} {SMILES#} {#represents|is from!} a molecule that is {clinical_toxicity#not &NULL}identified as {clinical_toxicity__names__adjective}.
3-methyl-4-oxoimidazo[5,1-d][1,2,3,5]tetrazine-8-carboxamide