Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
[a] CCOP(=S)(OCC)Oc1nc(Cl)c(Cl)cc1Cl
[b] CC(C)c1ccc(-c2ccccc2)cc1
[c] NC(=O)NN=Cc1ccc([N+](=O)[O-])o1
[d] CC(=O)OC1CCCCC1
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}