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 additional words.
Options:
a) C=CCNC(=O)ON=C1SCOC1C
b) CC(=O)OCC=C(C)C
c) COC(=O)C12Oc3ccc(-c4ccc5c(c4O)C(=O)C4=C(O)CC(C)C(O)C4(C(=O)OC)O5)c(O)c3C(=O)C1=C(O)CC(C)C2O
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}