Using CCCOC(Cc1ccc2c(ccn2COCC[Si](C)(C)C)c1)C(=O)OCC to produce CCCOC(Cc1ccc2c(ccn2COCC[Si](C)(C)C)c1)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.