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. Oc1ccc(Cc2ccc(O)cc2)cc1
b. O=C(OCC(O)C1COc2ccccc2O1)N1CCOCC1
c. CCOP(=O)(N=C1SCC(C)S1)OCC
d. CN1CCC(CN2c3ccccc3Sc3ccccc32)C1
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}