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 additional words.
Options:
a: O=[N+]([O-])c1ccc(-c2ccccc2)cc1
b: CN
c: CC(O)CN(C)C
d: Nc1nnc(-c2cccc(Cl)c2Cl)c(N)n1
e: O=C(c1ccccc1)c1cccc2c1CCC2C(=O)O
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}