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: CCOP(=S)(OCC)OC(Cl)C(Cl)(Cl)Cl
b: C=CCOC(=O)CCCCCCCC1OC1CCCCCCCC
c: CCCCCCOC(COCC(OCC)OCCCCCC)OCC
d: CCOc1ccccc1N1CCN(CCC=Cc2ccc3[nH]c(=O)ccc3c2)CC1
e: CCCCOCC
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}