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 additional words.
Options:
a O=C1C2CC=CCC2C(=O)N1SC(Cl)(Cl)Cl
b c1ccc(Nc2ccc(Nc3ccccc3)cc2)cc1
c O=C(O)CCC(=O)c1ccc(C2CCCCC2)c(Cl)c1
d SCCc1cnccn1
e CCN(CC)CC1CCCCN1CC(=O)N1c2ccccc2C(=O)Nc2cccnc21
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}