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 COc1ccc2c3c1OC1C(OC(=O)c4cccnc4)C=CC4C(C2)N(C)CCC341
b CC(C)C(=O)OC1CCC(N2CCCCC2)CC1
c CC(C)=O
d COc1cc2c(c3oc4cccc(O)c4c(=O)c13)C1C=COC1O2
e CCOP(=S)(CC)SCN1C(=O)c2ccccc2C1=O
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}