Using COc1ccc(CN2CC=CC(C)(C)C(NC(=O)OC(C)(C)C)C2=O)c(OC)c1 to produce COc1ccc(CN2CCCC(C)(C)C(NC(=O)OC(C)(C)C)C2=O)c(OC)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.