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 additional words.
Options:
[a] CP(=O)(Oc1ccccc1)Oc1ccccc1
[b] CC1=CC(=C2C(=O)c3ccccc3C2=O)C=CN1CCN1CCCCC1
[c] CC(C(=O)O)c1ccc(C(=O)c2ccccc2)s1
[d] COc1ccc(OC)c(Cc2cnc3nc(N)nc(N)c3c2C)c1
Answer: c
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}