Using CC(C)(C)C(=O)OCI, C[C@@H](O)[C@H]1C(=O)N2C(C(=O)[O-])=C(c3ncn4ccsc34)[C@H](C)[C@H]12 to produce C[C@@H](O)[C@H]1C(=O)N2C(C(=O)OCOC(=O)C(C)(C)C)=C(c3ncn4ccsc34)[C@H](C)[C@H]12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.