Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any additional words.
Options:
(a) COP(=S)(OC)Oc1ccc(C#N)cc1Cl
(b) CCC(C)(O)C(=O)OC1C(=O)OC2CC3C(C)=CC(O)C(O)C3(C)C3C4(O)OCC23C1C(C)C4O
(c) CC(C)(C(N)=O)c1ccccc1
(d) CCCCCCCCNC(C)C(O)c1ccc(SC(C)C)cc1
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}