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 additional words.
Options:
a CCCCC(CC)(CO)CO
b CCCN1C(=O)C2C3C=C(C(O)(c4ccccc4)c4ccccn4)C(C3=C(c3ccccc3)c3ccccn3)C2C1=O
c CCOC(=O)N(C)SN(C)C(=O)ON=C(C)SC
d COC(C)CC(OC)OC
e C=CCOC(=O)C1CC2OC2CC1C
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}