Using CCCc1cc(-c2nc(CC)cs2)ccc1OCCCOc1ccc2c(ccn2CC(=O)OC)c1 to produce CCCc1cc(-c2nc(CC)cs2)ccc1OCCCOc1ccc2c(ccn2CC(=O)O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.