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, d, or e without using any other words.
Options:
a. CCCOP(=S)(OCCC)OP(=S)(OCCC)OCCC
b. OCCN1CCN(CCCN2c3ccccc3C=Cc3ccccc32)CC1
c. CC(C)CCCCCCCOC(=O)CCCCC(=O)OCCCCCCCC(C)C
d. COc1ccc(C(Oc2ccccc2)C2=NCCCN2)cc1F
e. IC(I)I
Answer: b
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}