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 additional words.
Options:
a. COc1ccc2c(c1)c(CC(=O)Oc1cccc(Cl)c1)c(C)n2C(=O)c1ccc(Cl)cc1
b. CCNc1nc(Cl)nc(N(CC)CC)n1
c. CS(=O)(=O)c1ccc(-c2cn3ccccc3n2)cc1
d. O=[N+]([O-])c1cncn1CCN1CCOCC1
e. CC1=CC(=O)N2CC(=O)N(C)c3ccc(Cl)cc3C2(c2ccccc2)O1
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}