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 other words.
Options:
a: CC(Cl)COP(=O)(OCC(C)Cl)OCC(C)Cl
b: C=CN(CC)C(C)=O
c: CCOP(=O)(CC)Oc1cc(C)nc(SCC)n1
d: Cc1ccncc1
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}