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 other words.
Options:
a. O=C1C=CC(=O)N1C(=O)NCNC(=O)N1C(=O)C=CC1=O
b. CSP(=O)(SC)SC
c. CN(C)CCOCCN(C)C
d. ClC(Cl)=C1C(Cl)(Cl)C(Cl)=C(Cl)C1(Cl)Cl
Answer: c
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}