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 additional words.
Options:
a.) Cc1ccccc1NC(=N)Nc1ccccc1C
b.) CCCCN1C(=O)C2CC=CCC2C1=O
c.) CC1(C)Cc2cccc(OC(=O)NCSc3ccc(Cl)cc3)c2O1
d.) c1ccc(Nc2ccc(Nc3ccccc3)cc2)cc1
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}