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) O=S1(=O)CCCCO1
(b) ClC(Cl)(Cl)c1ccccc1
(c) CP(=S)(OCCCCCl)Oc1ccc([N+](=O)[O-])c(C(F)(F)F)c1
(d) NCc1cccc(CN)c1
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}