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, c, or d without using any other words.
Options:
a CC(=O)Nc1ccc(N)cc1
b CC(=O)OCC(C(OC(C)=O)c1ccccc1)[N+](=O)[O-]
c CC(C)NC1Cc2ccccc2Cc2ccccc21
d COCCc1ccc(OCC(O)CNC(C)C)cc1
Answer: b
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}