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, c, or d without using any additional words.
Options:
a. Cc1cccc(C)c1N(CCCC(=O)O)C(=O)c1ccc(Cl)cc1
b. CCCC1OP(=S)(Cl)OCC1CC
c. Cc1ccc(N(CC2=NCCN2)c2cccc(O)c2)cc1
d. CSC(C)=NOC(=O)N(C)SN(C)C(=O)Oc1ccc(C(C)(C)c2ccc(OC(=O)N(C)SN(C)C(=O)ON=C(C)SC)cc2)cc1
Answer: d
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}