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 other words.
Options:
a: COc1ccc(OC)c(NC(=O)CNC(=O)Cc2ccc(C(=O)c3ccc(C)cc3)n2C)c1
b: CN(C)CCC=C1c2ccccc2Sc2ccc(Cl)cc21
c: Clc1ccc(C(Cn2ccnc2)OCc2ccsc2Cl)c(Cl)c1
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}