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 CCCCCCCCCCCCc1ccccc1O
b COc1ccc(O)c(C(N)=O)c1
c Cc1ccc(C(=O)C(C)CN2CCCCC2)cc1
d CCOc1nnc(CSP(=S)(OCC)OCC)s1
e O=C(Cl)c1cccc([N+](=O)[O-])c1
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}