Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any additional words.
Options:
[a] O=[N+]([O-])c1ccc(Nc2ccc(O)cc2)c([N+](=O)[O-])c1
[b] FC(F)OC(Cl)C(F)(F)F
[c] CNC(=O)Oc1cccc2c1OCCC2
[d] CCCCNC(=S)N(CCCC)CCCC
[e] CCC(C)(C)C(=O)OC1CC(C)C=C2C=CC(C)C(CCC3CC(O)CC(=O)O3)C21
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}