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, or c without using any other words.
Options:
(a) CN(N=O)c1ccc(N=Nc2ccccc2)cc1
(b) OCCN(CCO)c1nc(N2CCCCC2)c2nc(N(CCO)CCO)ncc2n1
(c) CCNC(=O)OCCSCSP(=S)(OC)OC(C)C
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}