Using O=c1[nH]c(-c2ccccc2)c(OCCOC2CCCCO2)c2ccc(F)cc12 to produce O=c1[nH]c(-c2ccccc2)c(OCCO)c2ccc(F)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.