[{"from": "human", "value": "Given SMILES, write its nickname. ->  CC1=C2C(SC(C(OCC(CC)CCCC)=O)=C2F)=C(C3=CC4=C(C5=CC=C(CC(CCCC)CC)S5)C6=C(C=C(C)S6)C(C7=CC=C(CC(CC)CCCC)S7)=C4S3)S1\n"}, {"from": "gpt", "value": " PBDTTT-EFT\n"}]