Using CCOC(=O)c1cccc(-c2cnn3c(-c4ccnc(-c5ccoc5)c4)cnc3c2)c1 to produce OCc1cccc(-c2cnn3c(-c4ccnc(-c5ccoc5)c4)cnc3c2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.