Using CC(=O)OC(C)=O, O=C1OC2(CCN(Cc3ccccc3)CC2)c2cccnc21 to produce CC(=O)OC1OC2(CCN(Cc3ccccc3)CC2)c2cccnc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.