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) COc1ccccc1N1CCN(CCCc2ccc3c(c2)CCC(=O)N3)CC1
(b) CCCC1C2C=CC(C2)C1C=O
(c) COCc1ccc(COC(=O)C2C(C=C(C)C)C2(C)C)cc1
(d) CC1(NC(N)=O)CCCC1
Answer: c
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}