Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any additional words.
Options:
a ClCCO[SiH](OCCCl)OCCCl
b CCOC(=O)C1(CCCCCCOc2ccc(Cl)cc2)CO1
c CC(C)=CC1C(C(=O)OCc2coc(Cc3ccccc3)c2)C1(C)C
d CCOP(=O)(OC=CCl)N(CC)CC
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}