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, d, or e without using any other words.
Options:
a CCCCCCCCCCCCCCCCCC1=NCCN1CCO
b O=P(N1CC1)(N1CC1)N1CC1
c CC1C(=O)CC2(C(C)C)CC12
d O=c1[nH]c(=O)n(CC2CC2)c2nc[nH]c12
e COc1cccc(C2(O)CCCCC2CN(C)C)c1
Answer: d
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}