Using C1COCCO1, CCCc1cc(C(OCOC)(C(F)(F)F)C(F)(F)F)ccc1Oc1ccnc(Cl)c1 to produce CCCc1cc(C(OCOC)(C(F)(F)F)C(F)(F)F)ccc1Oc1ccnc(C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.