Using O=Cc1cccc(-c2cc(Nc3cccnc3)nc(N3CCOCC3)c2)c1 to produce OCc1cccc(-c2cc(Nc3cccnc3)nc(N3CCOCC3)c2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.