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) Cc1ccc(O)c(C)c1
(b) CC(=O)CNC(C)(C)Cc1ccc(Cl)cc1
(c) CCOP(=S)(CC)Oc1cc(Cl)ccc1Cl
(d) CCC(C)c1cc([N+](=O)[O-])cc([N+](=O)[O-])c1OC(C)=O
Answer: b
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}