Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
a. CCSc1nnc(C(C)(C)C)c(=O)n1N
b. O=C1C2CC=CCC2C(=O)N1SC(Cl)(Cl)C(Cl)Cl
c. CCOC(=O)c1cnc2n(c1=O)C(C)CCC2
d. OC(c1ccc(Cl)cc1)(c1ccc(Cl)cc1)c1cccnc1
e. Oc1ccc(-c2ccccc2)cc1CN1CCCC1
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}