Using CC(C)(C)OC(=O)N[C@H](CCCO)C(=O)OCc1ccccc1, COC(C)(C)OC to produce CC(C)(C)OC(=O)N1[C@@H](C(=O)OCc2ccccc2)CCCOC1(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.