Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
a.) CCCCCCCCCCN(CCCCCCCCCC)CCCCCCCCCC
b.) CC(NC(=Nc1ccncc1)NC#N)C(C)(C)C
c.) CCOP(=S)(OCC)SC1CCOC1=O
d.) CC(Oc1ccc(Oc2nc3ccc(Cl)cc3o2)cc1)C(=O)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}