Using COC(=O)c1cccc2[nH]c(NCC3CCN(C(=O)OC(C)(C)C)CC3)nc12 to produce COC(=O)c1cccc2[nH]c(NCC3CCNCC3)nc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.