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 additional words.
Options:
a.) CC12CCCC(C)(OC1)O2
b.) CC(C)OC(=O)C(O)(c1ccc(Br)cc1)c1ccc(Br)cc1
c.) COc1ccc(-c2ccccc2)cc1CN1CCCC1
d.) S=c1[nH]c2ccc(Cl)cc2[nH]1
e.) O=[N+]([O-])c1cncn1CCN1CCOCC1
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}