Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any other words.
Options:
[a] CCC1CCC(CC)O1
[b] O=c1[nH]cc2ncnc-2[nH]1
[c] CCOC(=O)C1OC1(C)c1ccccc1
[d] O=C(O)C=CC(=O)OCCOCCO
[e] COC(=O)C1=CCC23CCC(C(C)(C=CC=C(C)C(=O)O)OC2=O)C3(OC(C)=O)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}