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. CCOC(CC)(C1=NCCCN1)c1ccccc1
b. CCOP(=O)(OCC)Oc1ccc([N+](=O)[O-])c(Cl)c1
c. O=C1C(Cl)=C(Cl)C(=O)C(Cl)=C1Cl
d. CC=Cc1ccc(OC(=O)NC)c(OC)c1
e. CNC(C)Cc1ccc(Cl)cc1
Answer: a
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}