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, or d without using any additional words.
Options:
a.) CCC(Br)(CC)C(=O)NC(N)=O
b.) C=COCCSCCCC
c.) NC(Cc1c[nH]c2ccc(O)cc12)C(=O)O
d.) CN(C)C(=S)SSC(=S)NCCNC(=S)SSC(=S)N(C)C
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}