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 additional words.
Options:
(a) CCCCOCCOCCOC(=O)c1ccccc1C(=O)OCCOCCOCCCC
(b) CN1C(C(=O)Nc2ccccn2)=C(OC(=O)C(C)(C)C)c2sc(Cl)cc2S1(=O)=O
(c) CCP(=O)(OC)Oc1ccc(S(C)(=O)=O)cc1
(d) Cc1cc(C)cc(N)c1
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}