Using COCCCO, CC(C)CN(C(=O)c1nc2ccccc2[nH]1)[C@H]1C[C@@H](C(=O)N2CCOCC2)CN(C(=O)OC(C)(C)C)C1 to produce COCCCn1c(C(=O)N(CC(C)C)[C@@H]2CNC[C@H](C(=O)N3CCOCC3)C2)nc2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.