Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any other words.
Options:
a. CC(=O)CC(=O)Nc1ccccc1
b. CC1(C)CN(c2ccccc2)NC1=O
c. CCCCCC(C=Cn1ccnc1)OCc1ccccc1
d. O=C(O)COc1ccc(Cl)cc1
e. CCOP(=S)(OCC)SCc1nnc(OC)s1
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}