Using COC(=O)c1cc(Oc2ccc3c(c2)OCN(C)C3=O)cc(O[C@H]2CCOC2)c1 to produce CN1COc2cc(Oc3cc(O[C@H]4CCOC4)cc(C(=O)O)c3)ccc2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.