Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, or c without using any additional words.
Options:
a. O=C1c2ccccc2C(=O)c2c(Nc3ccc(Oc4ccc(S(=O)(=O)O)cc4)cc3)ccc(Nc3ccc(Oc4ccc(S(=O)(=O)O)cc4)cc3)c21
b. OC1(c2ccc(F)cc2)c2ccccc2C2=NCCN21
c. CC(N)C1CCC(c2ccccc2)CC1
Answer: b
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}