Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
a) COc1cc2c3c(c4ccc(OC)c(OC)c4c2cc1OC)CN1CCCC1C3
b) CN1CCC23c4c5ccc(O)c4OC2C(N=[N+]=[N-])CCC3C1C5
c) OCCN(CCO)c1nc(N2CCCCC2)c2nc(N(CCO)CCO)ncc2n1
d) CC(=O)Nc1ccc([N+](=O)[O-])c(Cl)n1
e) CCCCCCOCCCCCC
Answer: e
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}