Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
(a) CCCCCCCCCCCCCCCC(=O)OCC(O)C1OC(=O)C(O)=C1O
(b) OC1COC2C(O)COC12
(c) COc1nc(C)nc(NC(=O)NS(=O)(=O)c2ccccc2Cl)n1
(d) Cc1cc(-c2ccccc2)[nH]n1
Answer: a
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}