Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
[a] CNC(=O)Oc1ccc(C)c(C)c1C
[b] COP(=S)(OC)SCC(=O)N(c1ccc(Cl)cc1)C(C)C
[c] COc1ccc(C2=Cc3ccccc3OC2c2ccc(OCCN3CCCCC3)cc2)cc1
[d] CCCOC(C1=NCCCN1)c1ccccc1
[e] C=CCOc1ccccc1C(N)=O
Answer: a
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}