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 additional words.
Options:
a COCC(C)=O
b CCC(=O)n1c(=O)n(C2CCN(CCC(C#N)(c3ccccc3)c3ccccc3)CC2)c2ccccc21
c O=[N+]([O-])c1ccc(Nc2ccccc2)c(S(=O)(=O)O)c1
d CCC(=O)Nc1ncc(Cl)s1
e CCOc1ccccc1N1CCN(CCC=Cc2ccc3[nH]c(=O)ccc3c2)CC1
Answer: b
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}