Using O=C1c2cc3ccc4c(c3c(-c3ccc5c(c3)OCO5)c2CN1CCCOCc1ccccc1)OCO4 to produce O=C1c2cc3ccc4c(c3c(-c3ccc5c(c3)OCO5)c2CN1CCCO)OCO4, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.