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: CN1CCC(=C2c3ccccc3C=Cc3ccccc32)CC1
b: CCCCCCCCC=CCCCCCCCC(=O)OCCOC
c: CN(N=O)C1CCS(=O)(=O)C1
d: C=CCSCC=C
e: CC1CNC(C)CN1
Answer: a
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}