Using OC1CCC(c2cccnc2Oc2ccc(C(O)c3nc4ccccc4[nH]3)cc2)C1 to produce O=C(c1ccc(Oc2ncccc2C2CCC(O)C2)cc1)c1nc2ccccc2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.