Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, or c without using any other words.
Options:
a) Brc1cc2c(cc1Br)Oc1cc(Br)c(Br)cc1O2
b) CCN(CCC(=O)OC)c1ccccc1
c) C[N+]([O-])=NCOC1OC(CO)C(O)C(O)C1O
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}