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.) O=C1NCCN1c1ncc([N+](=O)[O-])s1
b.) CC(C)Oc1cccc(C2CC(=O)NC2=O)c1
c.) CCCCN(CCCC)SN(C)C(=O)ON=CC(C)(C)SC
d.) CCCCCCCCCCCCCCCCOC(=O)C1CC1
e.) COc1cc(C(=O)N2CCOCC2)cc(OC)c1OC
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}