Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
a. O=C(Cn1ccnc1)c1ccc2c(c1)Cc1ccccc1-2
b. COc1ccc([N+](=O)[O-])cc1N
c. COP(=O)(SC)c1ccccc1
d. CC(=O)Nc1c(I)c(C(=O)O)c(I)c(N(C)C(C)=O)c1I
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}