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: CCCCC(O)CCOC(C)=O
b: Clc1ccc(C2(Cn3cncn3)OCCO2)c(Cl)c1
c: CCC=CCC=O
d: CCCCOC(=O)CC(SP(=O)(OC)OC)C(=O)OCCCC
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}