Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
[a] COP(=S)(OC)SCc1nnc(SC(C)C)s1
[b] CN(C(=O)NC(C)(C)c1ccccc1)c1ccccc1
[c] CC(C)c1ccc(NC(=O)N(C)C)cc1
[d] CCCOP(C)(=S)Oc1ccc([N+](=O)[O-])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}