The chemical with the SMILES representation of C1CN=C2NCCCN2C1 exhibits a log10 acute oral toxicity (LD50 in rats) of 2.74 log10(mg/kg).
The {#molecule|chemical|compound!} with the {SMILES__description} {#representation of |!}{SMILES#} {#shows|exhibits|displays!} a {log10_LD50__names__noun} of {log10_LD50#} {log10_LD50__units}.
2,3,4,6,7,8-hexahydro-1H-pyrimido[1,2-a]pyrimidine