Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
a) O=C1NC(=O)C(c2ccccc2)(c2ccccc2)N1S(=O)(=O)c1ccccc1
b) OCC1COC(c2ccccc2)O1
c) O=C1OC(OC2OC(=O)C(Cl)=C2Cl)C(Cl)=C1Cl
d) O=S1(=O)CCCC1
e) c1ccc2c(NC3=NCCS3)cccc2c1
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}