Using OCCn1cncn1, COC(=O)Oc1cc(Nc2ncnc3cc(O)c(OC)cc23)c(F)cc1C to produce Cc1cc(F)c(Nc2ncnc3cc(OCCn4cncn4)ccc23)cc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.