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, d, or e without using any other words.
Options:
a.) CCOP(=S)(CCl)Oc1ccc([N+](=O)[O-])cc1
b.) O=C(O)Cn1c(=O)n(Cc2ccc(Br)cc2F)c(=O)c2ccc(F)cc21
c.) CNC(=O)Oc1cc(C(C)C)cc(C(C)C)c1
d.) CNC(=O)Oc1cc(C)cc(C)c1
e.) CCOP(=O)(OCC)SCn1nc(Cl)ccc1=O
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}