Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any additional words.
Options:
[a] OCC(O)C1OC2OC(C(Cl)(Cl)Cl)OC2C1O
[b] O=C(CCc1ccccc1)OC1=C(OC(=O)CCc2ccccc2)C(=O)OC1=O
[c] CC1=NN(c2ccccc2)C(=O)C1C=O
[d] O=C1C2CC=CCC2C(=O)N1SC(Cl)(Cl)C(Cl)Cl
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecule has the highest {acute_toxicity__names__noun}?
Constraint: Even if you are {#uncertain|not sure!}, you must pick either {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%acute_toxicity%}
Answer: {%multiple_choice_result}