Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, or c without using any other words.
Options:
(a) CN1CCC23c4c5ccc(O)c4OC2C(O)C=CC3C1C5
(b) COc1nc(C)nc(NC(=O)NS(=O)(=O)c2ccccc2Cl)n1
(c) CCNc1nc(Cl)nc(NCC)n1
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}