What is the rat LD50 (oral exposure) value for the SMILES CO[Si](CCCn1c(=O)n(CCC[Si](OC)(OC)OC)c(=O)n(CCC[Si](OC)(OC)OC)c1=O)(OC)OC: 2.557
What is the {acute_toxicity__names__noun} value for the {SMILES__description} {SMILES#}: {acute_toxicity#}