Using O=C(Nc1ccc2cc(-c3ccccc3C(F)(F)F)[nH]c(=O)c2c1)OCCOCc1ccccc1 to produce O=C(Nc1ccc2cc(-c3ccccc3C(F)(F)F)[nH]c(=O)c2c1)OCCO, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.