Using C=CC(=O)OC(C)(C)C, CCc1nc(C(=O)N2CCOC3(CCN(CCc4ccc(CCO)cc4)CC3)C2)cs1 to produce CCc1nc(C(=O)N2CCOC3(CCN(CCc4ccc(CCOCCC(=O)OC(C)(C)C)cc4)CC3)C2)cs1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.