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) O=C(Nc1ccc(Nc2ccc(NC(=O)c3ccccc3)c3c2C(=O)c2ccccc2C3=O)c2c1C(=O)c1ccccc1C2=O)c1ccccc1
(b) 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
(c) CCc1nccnc1C
(d) CCCCCC(O)C=CC1C(O)CC(O)C1CC=CCCCC(=O)O
Answer: a
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}