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, or d without using any other words.
Options:
a.) CCCSP(=S)(OCC)Oc1cnn(-c2ccccc2)c(=O)c1OC
b.) CCC1C(c2ccccc2)=CCC(C(=O)O)C1C
c.) CCOC(=O)COc1ccc2c(C)c(CCN(CC)CC)c(=O)oc2c1Cl
d.) CCCCC(CC)CN
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}