Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
a: CCCNC(=O)C(C)Nc1ccc(OCC)cc1
b: COP(=O)(OC)Oc1ccc([N+](=O)[O-])cc1
c: CCC(=O)Nc1cccc(OC(=O)NC)c1
d: CN(C)N=Nc1ccc(C(N)=O)cc1
Answer: d
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}