Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any additional words.
Options:
a. CCN(CCO)c1cccc(C)c1
b. CCN(CC)C(=O)SCc1ccc(Cl)cc1
c. Clc1c(Cl)c(Cl)c2c(c1Cl)Oc1ccccc1O2
d. CCCOc1ccc(C(O)=S)c(CC)c1OC
e. CC(=O)Nc1c(I)c(C(=O)O)c(I)c(N(C)C(C)=O)c1I
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}