Using OC1C=C(c2cccnc2Oc2ccc(C(O)c3nc4ccccc4[nH]3)cc2)CC1 to produce OC1CCC(c2cccnc2Oc2ccc(C(O)c3nc4ccccc4[nH]3)cc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.