Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
a C1COCCOCCOCCO1
b CCOC(=O)C1=CN(C(=O)CC)C2CCCC(C)N2C1=O
c O=S(=O)(c1ccc(Cl)cc1)c1cc(Cl)c(Cl)cc1Cl
d O=C(Nc1nnc(CCN2c3ccccc3Sc3ccccc32)s1)c1ccccc1
Answer: c
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}