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) O=C(O)c1cc(I)cc(I)c1I
b) O=[N+]([O-])c1ccc(O)c2ncccc12
c) CCCOP(=S)(OCCC)Oc1ccc(S(C)=O)cc1
d) COC(=O)NS(=O)(=O)c1ccc(N)cc1
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}