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.) COC(=O)c1ccccc1OC
b.) CN(N=O)C(C)(C)c1ccccc1
c.) COc1ccc([N+](=O)[O-])cc1N
d.) CSC(C)=NOC(=O)N(C)SN(C)C(=O)Oc1ccc(OC(=O)N(C)SN(C)C(=O)ON=C(C)SC)cc1
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}