Using COCCOc1ccn2c(Cc3ccc4nc(N[C@@H]5CCCC[C@H]5O)sc4c3)cnc2c1 to produce OCCOc1ccn2c(Cc3ccc4nc(N[C@@H]5CCCC[C@H]5O)sc4c3)cnc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.