Using O=C1CC(CCOC2CCCCO2)(c2ccc3ccccc3c2)CN1Cc1ccccc1 to produce O=C1CC(CCO)(c2ccc3ccccc3c2)CN1Cc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.