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, or d without using any additional words.
Options:
a: CCCCCCCCCCNCCCCCCCC
b: OCC1CO1
c: C=CCOC(=O)CC(SP(=S)(OC)OC)C(=O)OCC(C)SP(=S)(OC)OC
d: C=C(C)C(=O)OCCN1CCCCC1
Answer: b
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}