Using O, CCOC(=O)C1N=c2ccc3c(c2=CC1(C(=O)OCC)c1ccc2c(c1)OCO2)OCO3 to produce O=C1OCc2c1nc1ccc3c(c1c2-c1ccc2c(c1)OCO2)OCO3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.