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, or d without using any additional words.
Options:
a. Cc1cnc(C)c(C)n1
b. Cc1ccc2nc3sc(=O)sc3nc2c1
c. C#CCN1CCC2=C(C1)c1c(O)cc(C(C)C(C)CCCCC)cc1OC2(C)C
d. CN(C)C(=O)C(CC[N+]1([O-])CCC(O)(c2ccc(Cl)cc2)CC1)(c1ccccc1)c1ccccc1
Answer: d
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}