Using C1COCCN1, C/N=c1\sc(C=O)c(CN2CCN(C(=O)OC(C)(C)C)CC2)n1C to produce C/N=c1\sc(CN2CCOCC2)c(CN2CCN(C(=O)OC(C)(C)C)CC2)n1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.