Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
a: COc1ccccc1-c1ccccc1
b: C=CC(=O)OCCOCCOCCOCCOC(=O)C=C
c: CNC(=O)OCc1cccc(COC(=O)NC)n1
d: CCCC(C)COC(C)=O
e: CC(=O)N1CCN(CC(=O)NN=Cc2ccc([N+](=O)[O-])o2)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}