Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any other words.
Options:
a. O=C1C(Cl)C(CCl)CN1c1cccc(C(F)(F)F)c1
b. CN(C)CCC=C1c2ccccc2C(C)(C)c2ccccc21
c. CC(=O)OC1CCCCC1
d. c1ccc(-c2nnn[nH]2)cc1
e. O=C(O)CSc1nc(-c2ccccc2)ns1
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}