Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
a. CCSN(C)C(=O)Oc1cccc2c1OC(C)(C)C2
b. Cc1ncc([N+](=O)[O-])n1CCO
c. C=CCC1=C(C)C(OC(=O)C2C(C=C(C)C)C2(C)C)CC1=O
d. CCCCC(=O)OCC(=O)C1(O)C(C)CC2C3CCC4=CC(=O)C=CC4(C)C3(F)C(O)CC21C
e. C[Si]1(C)OCCN(CCO)CCO1
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}