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 additional words.
Options:
a.) O=NN1CCCCC1
b.) CNC(=O)ON=C(C)C(C)(C)[N+](=O)[O-]
c.) CCOP(=S)(OC(C)C)Sc1nc(C)cc(C)n1
d.) C[Si](C)(C)OP(=O)(O[Si](C)(C)C)O[Si](C)(C)C
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}