Using CCOC(=O)CN, CCCCCCCCCCc1ccc(NC(=O)c2cnc(C(=O)O)c(OC)c2)cc1 to produce CCCCCCCCCCc1ccc(NC(=O)c2cnc(C(=O)NCC(=O)OCC)c(OC)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.