Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any other words.
Options:
a: C=CN(C)N=O
b: NC1=C(Cl)C(=O)c2ccccc2C1=O
c: CCC(C)=NO
d: COP(=S)(OC)SCSCC=C(Cl)Cl
e: O=C(CCCCC(=O)OCC1CC=CCC1)OCC1CC=CCC1
Answer: e
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}