Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
[a] COP(=O)(OC)Oc1nc(Cl)c(Cl)cc1Cl
[b] CC(C)CON=O
[c] O=S(C(Cl)C(Cl)Cl)C(Cl)C(Cl)Cl
[d] CC(=O)OC(C)CC(C)(C)OC(C)=O
[e] O=C(O)CCC(=O)Nc1ccc(NS(=O)(=O)c2ccc([N+](=O)[O-])cc2)cc1
Answer: d
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}