Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any other words.
Options:
a OC(c1ccccc1)c1ccccc1
b O=C1C2CC=CCC2C(=O)N1SC(Cl)(Cl)Cl
c CN1CCCCCC1=O
d O=C=NC1CCC(CC2CCC(N=C=O)CC2)CC1
e O=C(O)Cc1ccc(C2CCCCC2)c(Cl)c1
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}