Using O, c1ccc(C2=NCC(c3cccc(OCc4ccc5ccccc5n4)c3)O2)nc1 to produce O=C(NCC(O)c1cccc(OCc2ccc3ccccc3n2)c1)c1ccccn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.