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] CC(C)Cc1ccc2ccccc2n1
[b] Nc1ccc(O)c(C(=O)O)c1
[c] O=c1[nH]c2c(Cl)c(Cl)c(Cl)cc2o1
[d] CCN(C)CCC(CC=C(C)C)(C(N)=O)c1cccc2ccccc12
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}