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 other words.
Options:
a.) Oc1c(Br)cc(Br)cc1Br
b.) CCOC(C1=NCC(C)(C)CN1)c1ccccc1Cl
c.) CNC(=O)Oc1cc(C)c(S(C)=O)c(C)c1
d.) CN(C(=O)NC(C)(C)c1ccccc1)c1ccccc1
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}