Using COC(=O)CCc1ccc2c(c1)CC1CCC(C2)C1NC(=O)OC(C)(C)C to produce CC(C)(C)OC(=O)NC1C2CCC1Cc1cc(CCC=O)ccc1C2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.