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, or c without using any additional words.
Options:
a CCC(C(=O)O)c1ccc(N2Cc3ccccc3C2=O)cc1
b Cn1c(=O)c2c(ncn2C)n(C)c1=O
c Cc1cc(-n2c(C)nc3ccccc3c2=O)cc(C)c1O
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}