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) CCSc1nc(NC(C)C)nc(NC(C)C)n1
(b) Nc1ccc(Cc2ccc(N)c(Cl)c2)cc1Cl
(c) CC1C2Cc3ccc(O)cc3C1(C)CCN2CCc1ccccc1
(d) Cc1ccccc1-c1nc2c(N)nc(N)nc2nc1N
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}