Using O=C(Nc1ccc(Oc2ccc3nc(NC(=O)C4CC4)cn3c2)cc1F)OCc1ccccc1 to produce Nc1ccc(Oc2ccc3nc(NC(=O)C4CC4)cn3c2)cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.