Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
a: O=CC1CCC=CO1
b: OC1(c2ccc(Cl)c(Cl)c2)c2ccccc2C2=NCCN21
c: Clc1ccccc1C(c1ccccc1)(c1ccccc1)n1ccnc1
d: CCOc1ccc(-n2c(C)nc3ccccc3c2=O)cc1
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}