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 CSc1ccc2c(c1)N(CCC1CCCCN1C)c1ccccc1S2
b O=C(O)CCCc1ccc(N(CCCl)CCCl)cc1
c COC(=O)C1=CCCN(C)C1
d CCOP(=S)(CC)Oc1cnn(C)c(=O)c1OC
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}