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, or d without using any additional words.
Options:
a: CCC(COc1ccc(C(C)(C)C)cc1)OS(=O)Oc1ccccc1C
b: CC(C)C(=O)c1c(C(C)C)nn2ccccc12
c: Clc1cc(Cl)c(Cl)cc1Cl
d: CCC(C)c1cc(OC(=O)NC)ccc1C
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}