Using COc1cccc(NC(=O)OC(C)(C)C)c1C, CCCC(=O)N(C)OC to produce CCCC(=O)Cc1c(NC(=O)OC(C)(C)C)cccc1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.