Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
a.) CN(C)CCOC(=O)COc1ccc(Cl)cc1
b.) Nc1c(Cl)cc(Cl)cc1Cl
c.) N#CCC(=O)c1ccc(N)cc1
d.) CCNC(=O)C=Cc1cccc(Br)c1
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}