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. CN1CCN(C2=Nc3ccccc3Oc3ccc(Cl)cc32)CC1
b. ClC1CC(Cl)C(Cl)C1Cl
c. CCCC(c1cc(C)cc(C)c1O)c1cc(C)cc(C)c1O
d. CCP(=S)(OC)SCn1c(=O)oc2cc(Cl)cnc21
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}