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) Cc1ccc(N2C(=O)C=CC2=O)cc1
b) Cc1c(O)c(=O)ccn1C
c) CNC(=O)ON=C1SCOC1(C)C
d) O=c1c(Cl)c(Cl)cnn1-c1ccccc1
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}