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] CCOC(=O)CSP(=O)(OCC)OCC
[b] O=C(CN1CCNCC1)NC1CCCCC1
[c] CN1CC(CCN2CC=C(c3ccccc3)CC2)OC1=O
[d] CNC(=O)Oc1ccc(Cl)c2c1OC(C)(C)C2
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}