Using CC(=O)OCc1cncc(COc2cc3c(=O)ccn4c5ccc(Br)cc5c(c2)c34)c1 to produce O=c1ccn2c3ccc(Br)cc3c3cc(OCc4cncc(CO)c4)cc1c32, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.