Using COc1ccc(-c2ccc3ncc4c(c3n2)N(C2CCN(C(=O)OC(C)(C)C)CC2)C(=O)N(C)C4)cn1 to produce COc1ccc(-c2ccc3ncc4c(c3n2)N(C2CCNCC2)C(=O)N(C)C4)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.