[{"from": "human", "value": "Provide a description of this molecule. [B-1][Branch2][=Branch1][S][N][C][=Branch2][=Branch1][#Branch2][=C][C][=Branch2][=Branch1][Ring2][=C][Ring1][Branch1][C][=C][N+1][Ring1][=Branch2][=C][Branch1][Branch1][C][=C][Ring1][Branch1][C][C][C][=Branch1][C][=O][N][C][C][N][Branch1][Branch1][C][C][Ring1][=Branch1][C][=Branch1][C][=O][C][=C][Branch2][Ring1][O][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][C][=N][N][C][=Branch1][C][=O][C][=C][C][=C][C][=C][Ring1][=Branch1][Ring1][O][F][C][C][Branch1][C][F][F]"}, {"from": "gpt", "value": "The molecule is a poly (ADP-ribose) polymerase type 1 (PARP1) fluorescence imaging agent based on the PARP1 inhibitor olaparib, in which the cyclopropane group of olaparib is replaced by the green fluorescent dye boron-dipyrromethene (BODIPY) fluorophore (FL), with potential fluorescent imaging activity. Upon administration of the fluorescent PARP1 inhibitor PARPi-FL, the olaparib binding moiety specifically targets and binds to PARP1, which is often overexpressed on cancer cells. Upon fluorescent imaging, the PARP1-expressing cancer cells can be visualized. PARP1, the nuclear enzyme that catalyzes post-translational ADP-ribosylation of nuclear proteins, is activated by single-strand (SS) DNA breaks and overexpressed in certain tumor cells; it plays a key role in DNA repair, tumor cell resistance and survival."}]