Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
a. C=COCCCC
b. COc1ccc(-c2ccc(=O)n(CC(=O)N(C)C(C)Cc3ccccc3)n2)cc1
c. Cc1[nH]c(=O)n(C(C)(C)C)c(=O)c1Cl
d. O=CN1CCCCC1
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}