Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, or c without using any other words.
Options:
a. CC12CCC3c4ccc(O)cc4CCC3C1CCC2OC(=O)COC(=O)CCCc1ccc(N(CCCl)CCCl)cc1
b. CCN(CCC#N)c1ccc(N=Nc2nc3ccc(S(C)(=O)=O)cc3s2)c(C)c1
c. CNC(=O)N1C(=O)CN=C(c2ccccc2)c2cc([N+](=O)[O-])ccc21
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}