Using COc1cc(N(CC2NCCc3cc(O)c(O)cc32)C(=O)OCc2ccccc2)cc(OC)c1OC to produce COc1cc(NCC2NCCc3cc(O)c(O)cc32)cc(OC)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.